DPM 2010 inconsistent replica all the time

We are having problems to backup a Windows 2003 server using DPM 2010. We are backup about 40GB data but the replica will just use 90MB. it always reports the replica is inconsistent.

The latest update rollup 7 has been applied on the server and the agent version is 3.0.8195.

The error log from the agent:

0AC8 05A4 08/22 14:03:59.084 31 vsssnapshotrequestor.cpp(347) [00C11BF0] 47775C23-0B59-4DB7-BD74-F099CF0E5090 NORMAL CVssSnapshotRequestor::AddVolumeForSnapshot [00C11BF0]

0AC8 05A4 08/22 14:03:59.084 31 vsssnapshotrequestor.cpp(379) 47775C23-0B59-4DB7-BD74-F099CF0E5090 NORMAL ssLocalVolumeGuid = [\?\Volume{b71e166a-6ff3-11db-83e4-0015c5e9b572}], ssClusterVolGuid=[\?\Volume{b71e166a-6ff3-11db-83e4-0015c5e9b572}]

0AC8 05A4 08/22 14:03:59.084 31 vsssnapshotrequestor.cpp(390) [00C11BF0] 47775C23-0B59-4DB7-BD74-F099CF0E5090 NORMAL CVssSnapshotRequestor: AddVolumeForSnapshot - Marked volume \?\Volume{b71e166a-6ff3-11db-83e4-0015c5e9b572}\ to be snapshot

0AC8 05A4 08/22 14:03:59.084 31 vsssnapshotrequestor.cpp(424) [00C11BF0] 47775C23-0B59-4DB7-BD74-F099CF0E5090 NORMAL CVssSnapshotRequestor::StartPrepareForBackup [00C11BF0]

0AC8 05A4 08/22 14:03:59.131 31 vssbaserequestor.cpp(1070) [00C11BF0] 47775C23-0B59-4DB7-BD74-F099CF0E5090 NORMAL CVssBaseRequestor::StartGatherWriterStatus [00C11BF0]

0AC8 05A4 08/22 14:04:00.131 31 vssbaserequestor.cpp(946) [00C11BF0] NORMAL QueryStatus returned 0x4230a, Releasing VssAsync [0071A280]

0AC8 05A4 08/22 14:04:00.131 31 vssbaserequestor.cpp(1103) [00C11BF0] NORMAL CVssBaseRequestor::CheckWriterStatus [00C11BF0]

0AC8 05A4 08/22 14:04:00.131 31 filterwrapper.cpp(68) [0262FC5C] NORMAL CreateBitmap: {74B5196F-3934-4588-B613-8618A80CA453}

0AC8 05A4 08/22 14:04:00.131 31 vsssnapshotrequestor.cpp(529) [00C11BF0] NORMAL CVssSnapshotRequestor::StartDoSnapshot [00C11BF0]

0AC8 05A4 08/22 14:04:26.215 31 vssbaserequestor.cpp(946) [00C11BF0] NORMAL QueryStatus returned 0x8004231f, Releasing VssAsync [00719710]

0AC8 05A4 08/22 14:04:26.215 31 vastatemachineutils.cpp(406) [00BF4D28] WARNING Failed: Hr: = [0x8004231f] : F: lVal : hrStatus

0AC8 05A4 08/22 14:04:26.215 05 fsmstate.cpp(167) [00BB3AF0] WARNING Failed: Hr: = [0x8004231f] : F: lVal : pTransition->Execute(pEvent)

0AC8 05A4 08/22 14:04:26.215 05 genericfsm.cpp(225) [00BB32A0] WARNING Failed: Hr: = [0x8004231f] : F: lVal : m_pCurrentState->SendEvent(pEvent, pNextState)

0AC8 05A4 08/22 14:04:26.215 05 fsmtransition.cpp(111) [006FFC40] WARNING Failed: Hr: = [0x8004231f] HasEventErrorCode: completion: 0x27, signature: 0xaabbcc00

0AC8 05A4 08/22 14:04:26.215 31 aasubtask.cpp(1373) [00BB5FE8] WARNING Updating task status with hr: 8004231f8x, dls error code:30014

0AC8 1600 08/22 14:04:26.215 31 aasubtask.cpp(913) [00BB5FE8] WARNING

0AC8 1600 08/22 14:04:26.215 31 aasubtask.cpp(913) [00BB5FE8] WARNING 0\?\Volume{b71e166a-6ff3-11db-83e4-0015c5e9b572}\D:\

0AC8 1600 08/22 14:04:26.215 03 runtime.cpp(1599) [00B7F808] FATAL Subtask failure, sending status response XML=[

0AC8 1600 08/22 14:04:26.215 03 runtime.cpp(1599) [00B7F808] FATAL 0\?\Volume{b71e166a-6ff3-11db-83e4-0015c5e9b572}\D:\

0AC8 1600 08/22 14:04:26.215 03 runtime.cpp(1599) [00B7F808] FATAL ]

Thank a lot

Regard RW