SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   ----------

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934



                                 Arch Coal, Inc.
                      -------------------------------------
                                (Name of Issuer)

                     COMMON STOCK, PAR VALUE $0.01 per share
                    -----------------------------------------
                         (Title of Class of Securities)

                                    039380100
                                 --------------
                                 (CUSIP Number)

                                  July 16, 2008
                      ------------------------------------
                      (Date of Event Which Requires Filing
                               of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

      |_|   Rule 13d-1(b)

      |X|   Rule 13d-1(c)

      |_|   Rule 13d-1(d)

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act.

                         (Continued on following pages)

                              (Page 1 of 18 Pages)








-------------------                                           ------------------
CUSIP NO. 039380100                           13G             Page 2 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       TPG-Axon Capital Management, LP ("TPG-Axon Management")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|
                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
       Delaware

--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER

       SHARES                                                                  0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

       OWNED BY                1,530,400 shares of Common Stock and options to
                               purchase 6,000,000 shares of Common Stock
       EACH            ---------------------------------------------------------
                       7       SOLE DISPOSITIVE POWER
       REPORTING
                               0
       PERSON          ---------------------------------------------------------
                       8       SHARED DISPOSITIVE POWER
       WITH
                               1,530,400 shares of Common Stock and options to
                               purchase 6,000,000 shares of Common Stock
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       1,530,400 shares of Common Stock and options to purchase 6,000,000 shares
       of Common Stock
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       5.2%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       IA
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 039380100                           13G             Page 3 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       TPG-Axon Partners GP, LP ("PartnersGP")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|
                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
       Delaware

--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER

       SHARES                  0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

       OWNED BY                489,722 shares of Common Stock and options to
                               purchase 1,930,000 shares of Common Stock
       EACH            ---------------------------------------------------------
                       7       SOLE DISPOSITIVE POWER
       REPORTING
                               0
       PERSON          ---------------------------------------------------------
                       8       SHARED DISPOSITIVE POWER
       WITH
                               489,722 shares of Common Stock and options to
                               purchase 1,930,000 shares of Common Stock
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       489,722 shares of Common Stock and options to purchase 1,930,000 shares
       of Common Stock
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       1.7%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       PN
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 039380100                            13G            Page 4 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       TPG-Axon GP, LLC ("GPLLC")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|
                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
       Delaware

--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER

       SHARES                  0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

       OWNED BY                1,530,400 shares of Common Stock and options to
                               purchase 6,000,000 shares of Common Stock
       EACH            ---------------------------------------------------------
                       7       SOLE DISPOSITIVE POWER
       REPORTING
                               0
       PERSON          ---------------------------------------------------------
                       8       SHARED DISPOSITIVE POWER
       WITH
                               1,530,400 shares of Common Stock and options to
                               purchase 6,000,000 shares of Common Stock
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       1,530,400 shares of Common Stock and options to purchase 6,000,000 shares
       of Common Stock
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       5.2%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       OO
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 039380100                           13G             Page 5 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       TPG-Axon Partners, LP ("TPG-Axon Domestic")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|
                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION
       Delaware

--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER

       SHARES                  0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

       OWNED BY                489,722 shares of Common Stock and options to
                               purchase 1,930,000 shares of Common Stock
       EACH            ---------------------------------------------------------
                       7       SOLE DISPOSITIVE POWER
       REPORTING
                               0
       PERSON          ---------------------------------------------------------
                       8       SHARED DISPOSITIVE POWER
       WITH
                               489,722 shares of Common Stock and options to
                               purchase 1,930,000 shares of Common Stock
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       489,722 shares of Common Stock and options to purchase 1,930,000 shares
       of Common Stock
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       1.7%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       PN
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 039380100                            13G            Page 6 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       TPG-Axon Partners (Offshore), Ltd. ("TPG-Axon Offshore")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|
                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION

       Cayman Islands
--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER

       SHARES                  0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

       OWNED BY                1,040,678 shares of Common Stock and options to
                               purchase 4,070,000 shares of Common Stock
       EACH            ---------------------------------------------------------
                       7       SOLE DISPOSITIVE POWER
       REPORTING
                               0
       PERSON          ---------------------------------------------------------
                       8       SHARED DISPOSITIVE POWER
       WITH
                               1,040,678 shares of Common Stock and options to
                               purchase 4,070,000 shares of Common Stock
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       1,040,678 shares of Common Stock and options to purchase 4,070,000 shares
       of Common Stock
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       3.5%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       CO
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 039380100                            13G            Page 7 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       Dinakar Singh LLC ("Singh LLC")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|
                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION

       Delaware
--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER

       SHARES                  0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

       OWNED BY                1,530,400 shares of Common Stock and options to
                               purchase 6,000,000 shares of Common Stock
       EACH            ---------------------------------------------------------
                       7       SOLE DISPOSITIVE POWER
       REPORTING
                               0
       PERSON          ---------------------------------------------------------
                       8       SHARED DISPOSITIVE POWER
       WITH
                               1,530,400 shares of Common Stock and options to
                               purchase 6,000,000 shares of Common Stock
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       1,530,400 shares of Common Stock and options to purchase 6,000,000 shares
       of Common Stock
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       5.2%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       OO
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 039380100                            13G            Page 8 of 18 Pages
-------------------                                           ------------------

--------------------------------------------------------------------------------
1      NAME OF REPORTING PERSON
       I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

       Dinakar Singh ("Mr. Singh")
--------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP                  (a) |X|
                                                                         (b) |_|
--------------------------------------------------------------------------------
3      SEC USE ONLY

--------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION

       USA
--------------------------------------------------------------------------------
       NUMBER OF       5       SOLE VOTING POWER

       SHARES                  0
                       ---------------------------------------------------------
       BENEFICIALLY    6       SHARED VOTING POWER

       OWNED BY                1,530,400 shares of Common Stock and options to
                               purchase 6,000,000 shares of Common Stock
       EACH            ---------------------------------------------------------
                       7       SOLE DISPOSITIVE POWER
       REPORTING
                               0
       PERSON          ---------------------------------------------------------
                       8       SHARED DISPOSITIVE POWER
       WITH
                               1,530,400 shares of Common Stock and options to
                               purchase 6,000,000 shares of Common Stock
--------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       1,530,400 shares of Common Stock and options to purchase 6,000,000 shares
       of Common Stock
--------------------------------------------------------------------------------
10     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
       |_|

--------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

       5.2%*
--------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON

       IN
--------------------------------------------------------------------------------





-------------------                                           ------------------
CUSIP NO. 039380100                           13G             Page 9 of 18 Pages
-------------------                                           ------------------

ITEM 1.

      (a) NAME OF ISSUER: Arch Coal, Inc.

      (b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

                  One CityPlace Drive, Suite 300
                  St. Louis, Missouri 63141

ITEM 2.

         2(a). NAME OF PERSON FILING:

         This statement is filed by the entities and persons listed below, all
of whom together are referred to herein as the "Reporting Persons":

         (i)      TPG-Axon Capital Management, LP ("TPG-Axon Management"), a
                  Delaware limited partnership, with respect to the Shares
                  reported in this Schedule 13G held by TPG-Axon Partners, LP
                  ("TPG-Axon Domestic") and TPG-Axon Partners (Offshore), Ltd.
                  ("TPG-Axon Offshore," and together with TPG-Axon Domestic the
                  "Funds").

         (ii)     TPG-Axon Partners GP, LP ("PartnersGP"), a Delaware limited
                  partnership which serves as the general partner of TPG-Axon
                  Domestic, with respect to the Shares reported in this Schedule
                  13G managed by TPG-Axon Management and held by TPG-Axon
                  Domestic.

         (iii)    TPG-Axon GP, LLC ("GPLLC"), a Delaware limited liability
                  company, which serves as the general partner of TPG-Axon
                  Management and PartnersGP, with respect to the Shares reported
                  in this Schedule 13G managed by TPG-Axon Management and held
                  by the Funds.

         (iv)     TPG-Axon Domestic, a Delaware limited partnership, with
                  respect to  the Shares reported in this Schedule 13G directly
                  held by it.

         (v)      TPG-Axon Offshore, a Cayman Islands exempted company, with
                  respect to the Shares reported in this Schedule 13G directly
                  held by it.

         (vi)     Dinakar Singh LLC ("Singh LLC"), a Delaware limited liability
                  company which serves as the managing member of GPLLC, with
                  respect to the Shares reported in this Schedule 13G managed by
                  TPG-Axon Management and held by the Funds.

         (vii)    Dinakar Singh ("Mr. Singh"), an individual who serves as the
                  managing member of Singh LLC, with respect to the Shares
                  reported in this Schedule 13G managed by TPG-Axon Management
                  and held by the Funds.






-------------------                                          -------------------
CUSIP NO. 039380100                            13G           Page 10 of 18 Pages
-------------------                                          -------------------

      (b) ADDRESS OF PRINCIPAL OFFICE:

            (All, except TPG-Axon       TPG-Axon Offshore
            Offshore)

            888 Seventh Avenue          c/o Goldman Sachs (Cayman) Trust Limited
            38th Floor                  PO Box 896GT, Harbour Centre, 2nd Floor
            New York, New York 10019    George Town, Grand Cayman
                                        Cayman Islands, BWI

      (c)   Citizenship: Delaware (all except TPG-Axon Offshore and Mr.
            Singh); TPG-Axon Offshore: Cayman Islands; Mr. Singh is a
            United States citizen.

      (d)   Title of Class of Securities: Common Stock, par value $0.01
            per share (the "Shares")

      (e)   CUSIP Number: 039380100

ITEM    3. IF THIS STATEMENT IS FILED PURSUANT TO SS.SS.240.13D-1(B) OR
        240.13D-2(B) OR (C), CHECK WHETHER THE PERSON FILING IS A:

      (a)   |_| Broker or dealer registered under section 15 of the Act (15
                U.S.C. 78o).

      (b)   |_| Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

      (c)   |_| Insurance company as defined in section 3(a)(19) of the Act
                (15 U.S.C. 78c).

      (d)   |_| Investment company registered under section 8 of the
                Investment Company Act of 1940 (15 U.S.C. 80a-8).

      (e)   |_| An investment adviser in accordance with
                ss.240.13d-1(b)(1)(ii)(E).

      (f)   |_| An employee benefit plan or endowment fund in accordance with
                ss.240.13d-1(b)(1)(ii)(F).

      (g)   |_| A parent holding company or control person in accordance with
                ss.240.13d-1(b)(1)(ii)(G).

      (h)   |_| A savings association as defined in Section 3(b) of the
                Federal Deposit Insurance Act (12 U.S.C. 1813).

      (i)   |_| A church plan that is excluded from the definition of an
                investment company under section 3(c)(14) of the Investment
                Company Act of 1940 (15 U.S.C. 80a-3).

      (j)   |_| Group, in accordance with ss.240.13d-1(b)(1)(ii)(J).

      IF THIS STATEMENT IS FILED PURSUANT TO Rule 13d-1(c), CHECK THIS BOX   [X]





-------------------                                          -------------------
CUSIP NO. 039380100                            13G           Page 11 of 18 Pages
-------------------                                          -------------------

ITEM 4. OWNERSHIP

         TPG-Axon Management, as investment manager to TPG-Axon Domestic and
TPG-Axon Offshore, has the power to direct the disposition and voting of the
Shares held by TPG-Axon Domestic and TPG-Axon Offshore. PartnersGP is the
general partner of TPG-Axon Domestic. GPLLC is the general partner of PartnersGP
and TPG-Axon Management. Singh LLC is a Managing Member of GPLLC. Mr. Singh, an
individual, is the Managing Member of Singh LLC and in such capacity may be
deemed to control Singh LLC, GPLLC and TPG-Axon Management, and therefore may be
deemed the beneficial owner of the securities held by TPG-Axon Domestic and
TPG-Axon Offshore.

         Each of Singh LLC, GPLLC, PartnersGP and Mr. Singh disclaim beneficial
ownership of all of the shares of Common Stock and options to purchase shares of
Common Stock reported in this 13G.

         A. TPG-Axon Management
            (a)  Amount beneficially owned:  1,530,400 shares of Common Stock
                 and options to purchase 6,000,000 shares of Common Stock
            (b)  Percent of class: 5.2%*
                 (*All percentages of beneficial ownership reported in this
                 Schedule 13G are based on the 144,131,909 outstanding shares
                 of Common Stock reported in the Issuer's form 10-Q for the
                 quarterly period ended March 31, 2008.)
            (c)  Number of shares as to which the person has:
                 (i)   Sole power to vote or to direct the vote: 0
                 (ii)  Shared power to vote or to direct the vote: 1,530,400
                       shares of Common Stock and options to purchase
                       6,000,000 shares of Common Stock
                 (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv)  Shared power to dispose or to direct the disposition of:
                       1,530,400 shares of Common Stock and options to purchase
                       6,000,000 shares of Common Stock

         B. PartnersGP
            (a)  Amount beneficially owned:  489,722 shares of Common Stock and
                 options to purchase 1,930,000 shares of Common Stock
            (b)  Percent of class: 1.7%*
            (c)  Number of shares as to which the person has:
                 (i)   Sole power to vote or to direct the vote: 0
                 (ii)  Shared power to vote or to direct the vote: 489,722
                       shares of Common Stock and options to purchase
                       1,930,000 shares of Common Stock
                 (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv)  Shared power to dispose or to direct the disposition of:
                       489,722 shares of Common Stock and options to purchase
                       1,930,000 shares of Common Stock





-------------------                                          -------------------
CUSIP NO. 039380100                           13G            Page 12 of 18 Pages
-------------------                                          -------------------
         C. GPLLC
            (a)  Amount beneficially owned:  1,530,400 shares of Common Stock
                 and options to purchase 6,000,000 shares of Common Stock
            (b)  Percent of class: 5.2%*
            (c)  Number of shares as to which the person has:
                 (i)   Sole power to vote or to direct the vote: 0
                 (ii)  Shared power to vote or to direct the vote: 1,530,400
                       shares of Common Stock and options to purchase
                       6,000,000 shares of Common Stock
                 (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv)  Shared power to dispose or to direct the disposition of:
                       1,530,400 shares of Common Stock and options to purchase
                       6,000,000 shares of Common Stock

         D. TPG-Axon Domestic
            (a)  Amount beneficially owned: 489,722 shares of Common Stock and
                 options to purchase 1,930,000 shares of Common Stock
            (b)  Percent of class: 1.7%*
            (c)  Number of shares as to which the person has:
                 (i)   Sole power to vote or to direct the vote: 0
                 (ii)  Shared power to vote or to direct the vote:
                       489,722 shares of Common Stock and options to purchase
                       1,930,000 shares of Common Stock
                 (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv)  Shared power to dispose or to direct the disposition of:
                       489,722 shares of Common Stock and options to purchase
                       1,930,000 shares of Common Stock

         E. TPG-Axon Offshore
            (a)  Amount beneficially owned: 1,040,678 shares of Common Stock and
                 options to purchase 4,070,000 shares of Common Stock
            (b)  Percent of class: 3.5%*
            (c)  Number of shares as to which the person has:
                 (i)   Sole power to vote or to direct the vote: 0
                 (ii)  Shared power to vote or to direct the vote:
                       1,040,678 shares of Common Stock and options to purchase
                       4,070,000 shares of Common Stock
                 (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv)  Shared power to dispose or to direct the disposition of:
                       1,040,678 shares of Common Stock and options to purchase
                       4,070,000 shares of Common Stock

         F. Singh LLC
            (a)  Amount beneficially owned:  1,530,400 shares of Common Stock
                 and options to purchase 6,000,000 shares of Common Stock
            (b)  Percent of class: 5.2%*





-------------------                                          -------------------
CUSIP NO. 039380100                           13G            Page 13 of 18 Pages
-------------------                                          -------------------

            (c) Number of shares as to which the person has:
                 (i)   Sole power to vote or to direct the vote: 0
                 (ii)  Shared power to vote or to direct the vote: 1,530,400
                       shares of Common Stock and options to purchase
                       6,000,000 shares of Common Stock
                 (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv)  Shared power to dispose or to direct the disposition of:
                       1,530,400 shares of Common Stock and options to purchase
                       6,000,000 shares of Common Stock

         G. Mr. Singh
            (a)  Amount beneficially owned: 1,530,400 shares of Common Stock and
                 options to purchase 6,000,000 shares of Common Stock
            (b)  Percent of class: 5.2%*
            (c)  Number of shares as to which the person has:
                 (i)   Sole power to vote or to direct the vote: 0
                 (ii)  Shared power to vote or to direct the vote: 1,530,400
                       shares of Common Stock and options to purchase
                       6,000,000 shares of Common Stock
                 (iii) Sole power to dispose or to direct the disposition of: 0
                 (iv)  Shared power to dispose or to direct the disposition of:
                       1,530,400 shares of Common Stock and options to purchase
                       6,000,000 shares of Common Stock


ITEM 5.  OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

         Not applicable.

ITEM 6.  OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON

         See Item 4.

ITEM 7.  IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
         THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL
         PERSON.

         Not applicable.

ITEM 8.  IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP

         Not applicable

ITEM 9.  NOTICE OF DISSOLUTION OF THE GROUP

         Not applicable





-------------------                                          -------------------
CUSIP NO. 039380100                            13G           Page 14 of 18 Pages
-------------------                                          -------------------


ITEM 10. CERTIFICATION

         By signing below I certify that, to the best of my knowledge and
         belief, the securities referred to above were not acquired and are not
         held for the purpose of or with the effect of changing or influencing
         the control of the issuer of the securities and were not acquired and
         are not held in connection with or as a participant in any transaction
         having that purpose or effect.

                                    SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.


Dated:  July 25, 2008


                               TPG-Axon Capital Management, LP
                               By:  TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon Partners GP, LP
                               By: TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon GP, LLC


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President







-------------------                                          -------------------
CUSIP NO. 039380100                            13G           Page 15 of 18 Pages
-------------------                                          -------------------


                               TPG-Axon Partners, LP
                               By:  TPG-Axon Partners GP, LP, general partner
                               By:  TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon Partners (Offshore), Ltd.


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Director


                               Dinakar Singh LLC


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Managing Member


                               /s/  Dinakar Singh
                               ---------------------------
                               Dinakar Singh








-------------------                                          -------------------
CUSIP NO. 039380100                           13G            Page 16 of 18 Pages
-------------------                                          -------------------



                                LIST OF EXHIBITS
                                 TO SCHEDULE 13G

                                                                            Page
                                                                            ----

1. Agreement to Make Joint Filing .........................................  17








-------------------                                          -------------------
CUSIP NO. 039380100                            13G           Page 17 of 18 Pages
-------------------                                          -------------------


                                    EXHIBIT 1

                         AGREEMENT TO MAKE JOINT FILING



         Each of the undersigned acknowledges and agrees that the foregoing
statement on Schedule 13G is filed on behalf of each of the undersigned and that
all subsequent amendments to this statement on Schedule 13G shall be filed on
behalf of each of the undersigned without the necessity of filing additional
joint filing agreements.


Dated:  July 25, 2008


                               TPG-Axon Capital Management, LP
                               By:  TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon Partners GP, LP
                               By: TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon GP, LLC


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President







-------------------                                          -------------------
CUSIP NO. 039380100                           13G            Page 18 of 18 Pages
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                               TPG-Axon Partners, LP
                               By:  TPG-Axon Partners GP, LP, general partner
                               By:  TPG-Axon GP, LLC, general partner


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Co-President


                               TPG-Axon Partners (Offshore), Ltd.


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Director


                               Dinakar Singh LLC


                               By:  /s/  Dinakar Singh
                                    ----------------------
                                    Dinakar Singh
                                    Managing Member


                               /s/  Dinakar Singh
                               ---------------------------
                               Dinakar Singh