UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                  SCHEDULE 13D
                    Under the Securities Exchange Act of 1934

                               (Amendment No. 2)*



                     Flagstone Reinsurance Holdings Limited
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                                (Name of Issuer)

                    Common Shares, $0.01 par value per share
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                         (Title of Class of Securities)

                                    G3529T105
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                                 (CUSIP Number)

                                                 with a copy to:
     Gregory L. Florio, Esq.                     Robert G. Minion, Esq.
     Marathon Asset Management, LP               Lowenstein Sandler PC
     One Bryant Park, 38th Floor                 1251 Avenue of the Americas
     New York, New York 10036                    New York, New York 10020
     212.381.0159                                973.597.2424
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                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                September 8, 2009
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             (Date of Event which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of Sections 240.13d-1(e),  240.13d-1(f) or 240.13d-1(g),  check
the following box. [ ]

Note:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule,  including all exhibits. See Section 240.13d-7 for other
parties to whom copies are to be sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

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  (however,  see the
Notes).





Cusip No.    G3529T105
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1.   Names of Reporting Persons.  I.R.S. Identification Nos. of above persons
     (entities only):

                Marathon Asset Management, LP
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2.   Check the Appropriate Box if a Member of a Group (See Instructions):

     (a)           Not
     (b)        Applicable
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3.   SEC Use Only

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4.   Source of Funds (See Instructions):  AF, WC
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5.   Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d)
     or 2(e):
                Not Applicable
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6.   Citizenship or Place of Organization:   Delaware
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   Number of                          7. Sole Voting Power:           4,180,608*
                                         ---------------------------------------
   Shares Beneficially                8. Shared Voting Power:                 0*
                                         ---------------------------------------
   Owned by Each Reporting            9. Sole Dispositive Power:      4,180,608*
                                         ---------------------------------------
   Person With                       10. Shared Dispositive Power:            0*
                                         ---------------------------------------
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11.  Aggregate Amount Beneficially Owned by Each Reporting Person:    4,180,608*
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12.  Check if the Aggregate Amount in Row (11) Excludes Certain Shares
     (See Instructions):         Not Applicable
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13.  Percent of Class Represented by Amount in Row (11):     4.9%*
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14.  Type of Reporting Person (See Instructions):  IA
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* As of September 8, 2009,  Marathon Special  Opportunity Master Fund, Ltd. (the
"Master Fund") and Marathon  Special  Opportunity  Liquidating  Fund,  Ltd. (the
"Liquidating  Fund" and together with the Master Fund,  the "Funds") held in the
aggregate  4,154,134  shares of common  shares,  par value  $0.01 per share (the
"Shares"), of Flagstone Reinsurance Holdings Limited, a Bermuda exempted company
(the "Company").  As of September 8, 2009, the Master Fund held in the aggregate
26,474 restricted share units ("RSU").  Each RSU represents the right to receive
without payment to the Company one newly-issued,  fully paid and  non-assessable
Share,  subject  to the  terms  and  conditions  of the RSU Plan  and the  grant
certificate  evidencing  each  grant.  In the  discretion  of  the  Compensation
Committee of the Company,  upon vesting, the value of an RSU grant alternatively
may be paid in cash,  or partly in cash and  partly in  Shares.  Marathon  Asset
Management,  LP, a Delaware  limited  partnership  (the  "Investment  Manager"),
serves as the investment manager of the Funds pursuant to one or more Investment
Management Agreements between the Investment Manager and the Funds. As a result,
the  Investment  Manager  possesses the sole power to vote and the sole power to
direct the  disposition  of all  securities  of the  Company  held by the Funds.
Accordingly,  as of September 8, 2009,  for the purposes of Rule 13d-3 under the
Securities Exchange Act of 1934, as amended, the Investment Manager is deemed to
beneficially  own  4,180,608  Shares,  or 4.9% of the Shares  deemed  issued and
outstanding as of that date.





Item 5.   Interest in Securities of the Issuer.
          ------------------------------------

          Item 5 is hereby amended and restated in its entirety as follows:

          According  to the Form 10-Q for the  quarterly  period  ended June 30,
2009, and filed with the  Securities and Exchange  Commission on August 4, 2009,
there were  84,864,844  shares of common shares,  par value $0.01 per share (the
"Shares"), of Flagstone Reinsurance Holdings Limited, a Bermuda exempted company
(the "Company"),  issued and outstanding as of July 31, 2009. As of September 8,
2009, (i) the Funds held in the aggregate  4,154,134  Shares and (ii) the Master
Fund held in the  aggregate  26,474  restricted  share units  ("RSU").  Each RSU
represents the right to receive without payment to the Company one newly-issued,
fully paid and non-assessable  Share, subject to the terms and conditions of the
RSU Plan and the grant  certificate  evidencing each grant. In the discretion of
the  Compensation  Committee of the Company,  upon vesting,  the value of an RSU
grant alternatively may be paid in cash, or partly in cash and partly in Shares.
Accordingly,  as of September 8, 2009,  for the purposes of Rule 13d-3 under the
Securities Exchange Act of 1934, as amended, the Investment Manager is deemed to
beneficially  own  4,180,608  Shares,  or 4.9% of the Shares  deemed  issued and
outstanding as of that date.

          The  following  table details the  transactions  since the most recent
filing on Schedule 13D in Shares, or securities  convertible  into,  exercisable
for or exchangeable for Shares, by the Investment Manager or any other person or
entity  controlled by the  Investment  Manager or any person or entity for which
the  Investment   Manager  possesses  voting  or  investment  control  over  the
securities  thereof  (each  of  which  was  effected  in an  ordinary  brokerage
transaction).


                                    Purchases
                                    ---------

            Date                Security           Amount             Price

            08/20/2009          Shares               2,100            $10.8743


                                      Sales
                                      -----

            Date                Security           Amount             Price

            09/08/2009          Shares              99,509            $10.5292
            09/04/2009          Shares              56,378            $10.5443
            08/31/2009          Shares              84,054            $10.8585
            08/28/2009          Shares              25,245            $10.8656
            08/27/2009          Shares              40,687            $10.8973
            08/26/2009          Shares             152,770            $10.8979
            08/25/2009          Shares              94,399            $10.899
            08/24/2009          Shares              95,120            $10.8483
            08/21/2009          Shares             158,500            $10.9223
            08/20/2009          Shares              53,200            $10.8825
            08/20/2009          Shares               2,807            $10.87


          As of September 8, 2009, the Investment Manager ceased to beneficially
own more than 5% of the outstanding Shares.




                                    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.


                                         September 10, 2009

                                         MARATHON ASSET MANAGEMENT, LP

                                         By:  Marathon Asset Management GP, LLC,
                                              its general partner


                                         By:  /s/ Gregory Florio
                                            ------------------------------------
                                            Name:  Gregory Florio
                                            Title: Chief Compliance Officer




  Attention: Intentional misstatements or omissions of fact constitute Federal
                   criminal violations (See 18 U.S.C. 1001).