UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

                               (Amendment No. 4)*


                          ATLAS PIPELINE PARTNERS, L.P.
       ------------------------------------------------------------------
                                (Name of Issuer)

                                  Common Units
       ------------------------------------------------------------------
                         (Title of Class of Securities)

                                    049392103
       ------------------------------------------------------------------
                                 (CUSIP Number)

                                December 31, 2010
       ------------------------------------------------------------------
             (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)

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*    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 the disclosures provided in a prior cover page.

     The  information  required in 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).

     Persons who respond to the collection of information contained in this form
     are not required to respond unless the form displays a currently  valid OMB
     control number.






CUSIP No. 049392103
          ---------


1.   Names of Reporting  Persons/  I.R.S.  Identification  Nos. of Above Persons
     (entities only):
                                 LEON G. COOPERMAN
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2.  Check the Appropriate Box if a Member of a Group (See Instructions)

         (a)   [_]
         (b)   [X]
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3.  SEC  Use  Only

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4.  Citizenship or Place of Organization:

                         UNITED STATES
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Number of             5.  Sole Voting Power:            3,032,118
Shares Bene-
ficially              6.  Shared Voting Power           2,087,700
Owned by
Each Report-          7.  Sole Dispositive Power:       3,032,118
ing Person
With                  8.  Shared Dispositive Power      2,087,700
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9.  Aggregate Amount Beneficially Owned by Each Reporting Person:

                                         5,119,818
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10.  Check Box if the Aggregate Amount in Row (9) Excludes
     Certain Shares [_]
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11.  Percent of Class Represented by Amount in Row (9):

                                         9.6 %
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12.  Type of Reporting Person

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




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CUSIP No. 049392103
          ---------


This statement is filed with respect to the Shares of ATLAS  PIPELINE  PARTNERS,
L.P. (the "Issuer")  beneficially  owned by LEON G. COOPERMAN as of December 31,
2010 and amends and supplements the Schedule 13G previously filed (the "Schedule
13G"). Except as set forth herein the Schedule 13G is unmodified.


Item 2(a) Name of Person Filing:

     Mr.  Cooperman  is  married to an  individual  named  Toby  Cooperman.  Mr.
Cooperman has an adult son named Michael S. Cooperman.  The Michael S. Cooperman
WRA Trust( the "WRA Trust"),  is an irrevocable trust for the benefit of Michael
S.  Cooperman.  Mr.  Cooperman  has  investment  authority  over the  Michael S.
Cooperman and the WRA Trust accounts.


Item 4. Ownership:

Item 4(a) (b) Amount Beneficially Owned and Percent of Class:

     Mr.  Cooperman may be deemed the beneficial owner of 5,119,818 Shares which
constitutes approximately 9.6 % of the total number of Shares outstanding.  This
is  based  on a total  of  53,312,760  Shares  outstanding  as  reported  on the
Company's Form 10-Q filed with the SEC for the quarter ended September 30, 2010.

     This consists of 1,444,318 Shares owned by Capital LP; 342,100 Shares owned
by Investors LP;  520,700 Shares owned by Equity LP; 250,000 Shares owned by Mr.
Cooperman;  100,000 Shares owned by Toby Cooperman;  150,000 Shares owned by the
Foundation;  2,087,700 Shares owned by the Managed Accounts; 78,000 Shares owned
by Michael S. Cooperman; and 147,000 Shares owned by the WRA Trust.

Item 4(c). Number of Shares as to which such person has:

   (i)   Sole power to vote or to direct the vote:                 3,032,118

   (ii)  Shared power to vote or to direct the vote:               2,087,700

   (iii) Sole power to dispose or to direct the disposition of:    3,032,118

   (iv)  Shared power to dispose or to direct the disposition of:  2,087,700


Item 5. Ownership of Five Percent or Less of a Class:

     This Item 5 is not applicable.


Item 6. Ownership of More than Five Percent on Behalf of Another Person:

     This Item 6 is not applicable.




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CUSIP No. 049392103
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Item 7.  Identification  and Classification of the Subsidiary Which Acquired the
         Security Being Reported on by the Parent Holding Company:

     This Item 7 is not applicable.


Item 8. Identification and Classification of Members of the Group:

     This Item 8 is not applicable.


Item 9.  Notice of Dissolution of Group:

     This Item 9 is not applicable.


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: February 3, 2011 as of December 31, 2010


LEON G. COOPERMAN, individually,
and as Managing Member of Omega
Associates, L.L.C. on behalf of
Omega Capital Partners, L.P.,
Omega Capital Investors, L.P.,
Omega Equity Investors, L.P.,and
as President of Omega Advisors, Inc.


By /s/ ALAN M. STARK
  ------------------
  Alan M. Stark
  Attorney-in-Fact
Power of Attorney on file



ATTENTION:  INTENTIONAL  MISSTATEMENTS  OR OMISSIONS OF FACT CONSTITUTE  FEDERAL
CRIMINAL VIOLATIONS (SEE 18 U.S.C. 1001).




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