here are the vmotion logs from the source when it fails
2013-01-20T15:00:37.200Z cpu12:9141)Config: 347: "SIOControlFlag2" = 1, Old Value: 0, (Status: 0x0)
2013-01-20T15:00:37.917Z cpu6:44048)Migrate: vm 44049: 3273: Setting VMOTION info: Source ts = 1358694037317522, src ip = <10.60.1.249> dest ip = <10.60.1.213> Dest wid = 42592 using SHARED swap
2013-01-20T15:00:37.920Z cpu4:44242)MigrateNet: 1165: 1358694037317522 S: Successfully bound connection to vmknic '10.60.1.249'
2013-01-20T15:00:37.920Z cpu6:44048)Tcpip_Vmk: 1213: Affinitizing 10.60.1.249 to world 44242, Success
2013-01-20T15:00:37.920Z cpu6:44048)VMotion: 2688: 1358694037317522 S: Set ip address '10.60.1.249' worldlet affinity to send World ID 44242
2013-01-20T15:00:37.920Z cpu6:44048)Hbr: 3308: Migration start received (worldID=44049) (migrateType=1) (event=0) (isSource=1) (sharedConfig=1)
2013-01-20T15:00:37.920Z cpu14:8796)MigrateNet: vm 8796: 2061: Accepted connection from <10.60.1.213>
2013-01-20T15:00:37.920Z cpu14:8796)MigrateNet: vm 8796: 2131: dataSocket 0x4100264a3a00 receive buffer size is 563724
2013-01-20T15:00:37.921Z cpu4:44242)MigrateNet: 1165: 1358694037317522 S: Successfully bound connection to vmknic '10.60.1.249'
2013-01-20T15:00:37.921Z cpu4:44242)VMotionUtil: 3184: 1358694037317522 S: Stream connection 1 added.
2013-01-20T15:00:37.921Z cpu4:44242)MigrateNet: 1165: 1358694037317522 S: Successfully bound connection to vmknic '10.60.1.250'
2013-01-20T15:00:37.921Z cpu4:44242)VMotionUtil: 3184: 1358694037317522 S: Stream connection 2 added.
2013-01-20T15:00:57.942Z cpu17:44240)WARNING: VMotionUtil: 2098: 1358694037317522 S: Stream write completion 0x4125b00133d0 inactive for at least 20 seconds! Progressed to 60392/527876 bytes.
2013-01-20T15:00:57.942Z cpu17:44240)VMotionUtil: 5119: 1358694037317522 S: Socket 0x410026469400 streamHealth pending: 0/563724 snd 144 rcv
2013-01-20T15:00:57.942Z cpu19:44241)WARNING: VMotionUtil: 2098: 1358694037317522 S: Stream write completion 0x4125b00131b0 inactive for at least 20 seconds! Progressed to 35816/527876 bytes.
2013-01-20T15:00:57.942Z cpu19:44241)VMotionUtil: 5119: 1358694037317522 S: Socket 0x41001b835a00 streamHealth pending: 0/563724 snd 144 rcv
2013-01-20T15:01:17.963Z cpu19:44241)WARNING: VMotionUtil: 2098: 1358694037317522 S: Stream write completion 0x4125b00133d0 inactive for at least 20 seconds! Progressed to 60392/527876 bytes.
2013-01-20T15:01:17.963Z cpu19:44241)VMotionUtil: 5119: 1358694037317522 S: Socket 0x410026469400 streamHealth pending: 0/563724 snd 144 rcv
2013-01-20T15:01:17.963Z cpu17:44240)WARNING: VMotionUtil: 2098: 1358694037317522 S: Stream write completion 0x4125b00131b0 inactive for at least 20 seconds! Progressed to 35816/527876 bytes.
2013-01-20T15:01:17.963Z cpu17:44240)VMotionUtil: 5119: 1358694037317522 S: Socket 0x41001b835a00 streamHealth pending: 0/563724 snd 144 rcv
2013-01-20T15:01:37.983Z cpu19:44241)WARNING: VMotionUtil: 2098: 1358694037317522 S: Stream write completion 0x4125b00131b0 inactive for at least 20 seconds! Progressed to 35816/527876 bytes.
2013-01-20T15:01:37.983Z cpu19:44241)VMotionUtil: 5119: 1358694037317522 S: Socket 0x41001b835a00 streamHealth pending: 0/563724 snd 144 rcv
2013-01-20T15:01:37.983Z cpu17:44240)WARNING: VMotionUtil: 2098: 1358694037317522 S: Stream write completion 0x4125b00133d0 inactive for at least 20 seconds! Progressed to 60392/527876 bytes.
2013-01-20T15:01:37.983Z cpu17:44240)VMotionUtil: 5119: 1358694037317522 S: Socket 0x410026469400 streamHealth pending: 0/563724 snd 144 rcv
2013-01-20T15:01:58.004Z cpu17:44240)WARNING: VMotionUtil: 2098: 1358694037317522 S: Stream write completion 0x4125b00133d0 inactive for at least 20 seconds! Progressed to 60392/527876 bytes.
2013-01-20T15:01:58.004Z cpu17:44240)VMotionUtil: 5119: 1358694037317522 S: Socket 0x410026469400 streamHealth pending: 0/563724 snd 144 rcv
2013-01-20T15:01:58.004Z cpu19:44241)WARNING: VMotionUtil: 2098: 1358694037317522 S: Stream write completion 0x4125b00131b0 inactive for at least 20 seconds! Progressed to 35816/527876 bytes.
2013-01-20T15:01:58.004Z cpu19:44241)VMotionUtil: 5119: 1358694037317522 S: Socket 0x41001b835a00 streamHealth pending: 0/563724 snd 144 rcv
2013-01-20T15:02:01.346Z cpu19:44241)WARNING: VMotionUtil: 4526: 1358694037317522 S: socket connected returned: Already disconnected
2013-01-20T15:02:01.346Z cpu19:44241)WARNING: VMotionUtil: 6990: 1358694037317522 S: failed to flush stream buffer: Already disconnected
2013-01-20T15:02:01.346Z cpu17:44240)WARNING: VMotionUtil: 4526: 1358694037317522 S: socket connected returned: Already disconnected
2013-01-20T15:02:01.346Z cpu19:44241)WARNING: VMotionUtil: 1617: 1358694037317522 S: failed writing stream completion: Already disconnected
2013-01-20T15:02:01.346Z cpu17:44240)WARNING: VMotionUtil: 6990: 1358694037317522 S: failed to flush stream buffer: Already disconnected
2013-01-20T15:02:01.346Z cpu17:44240)WARNING: VMotionUtil: 1617: 1358694037317522 S: failed writing stream completion: Already disconnected
2013-01-20T15:02:01.346Z cpu19:44241)WARNING: Migrate: 269: 1358694037317522 S: Failed: Already disconnected (0xbad002e) @0x0
2013-01-20T15:02:01.346Z cpu19:44241)VMotionUtil: 5119: 1358694037317522 S: Socket 0x410026469400 streamSock pending: 563724/563724 snd 144 rcv
2013-01-20T15:02:01.346Z cpu19:44241)VMotionUtil: 5119: 1358694037317522 S: Socket 0x41001b835a00 streamSock pending: 563724/563724 snd 144 rcv
2013-01-20T15:02:01.422Z cpu0:44059)WARNING: Migrate: 5244: 1358694037317522 S: Migration considered a failure by the VMX. It is most likely a timeout, but check the VMX log for the true error.
2013-01-20T15:02:01.422Z cpu0:44059)Hbr: 3405: Migration end received (worldID=44049) (migrateType=1) (event=1) (isSource=1) (sharedConfig=1)
2013-01-20T15:02:01.422Z cpu12:44243)VMotionUtil: 5119: 1358694037317522 S: Socket 0x4100264a3a00 rcvMigFree pending: 31424/35792 snd 0 rcv
2013-01-20T15:02:01.455Z cpu2:9138)Config: 347: "SIOControlFlag2" = 0, Old Value: 1, (Status: 0x0)