There is insufficient system memory to run this query. Error 701

We just migrated from a single server 2003 Ent machine running SQL 2005 to a clustered environment. The old machine had 32GB of RAM...both new cluster machines have 64GB of ram. From what I can tell the servers are configured the same, however, each day we continue to see this error message in the logs. I am at a loss as to what it could be...here is more info:

Microsoft SQL Server 2005 - 9.00.5000.00 (Intel X86) Dec 10 2010 10:56:29 Copyright (c) 1988-2005 Microsoft Corporation Standard Edition on Windows NT 5.2 (Build 3790: Service Pack 2)

PAE switch set in boot.ini

AWE enabled - Min set at 0 and Max set at 2147483647

Min memory per query - 1024

Page file - Initial size = 2046...Max Size = 4092

Full Error:

Event Type: Error
Event Source: MSSQLSERVER
Event Category: (2)
Event ID: 701
Date: 12/2/2013
Time: 9:06:05 AM
User: N/A
Computer: ULMSQLCLUSTER
Description:
There is insufficient system memory to run this query.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: bd 02 00 00 11 00 00 00 ½.......
0008: 0e 00 00 00 55 00 4c 00 ....U.L.
0010: 4d 00 53 00 51 00 4c 00 M.S.Q.L.
0018: 43 00 4c 00 55 00 53 00 C.L.U.S.
0020: 54 00 45 00 52 00 00 00 T.E.R...
0028: 09 00 00 00 53 00 74 00 ....S.t.
0030: 69 00 6e 00 67 00 72 00 i.n.g.r.
0038: 61 00 79 00 00 00 a.y...

Any help would be amazing.

Thanks,

Matt