Redgate Backup failing Randomly

I have a redgate 6 backup job which runs daily . The job seems to fail randomly with the following message in the error log.

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ERRORS AND WARNINGS

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15/01/2012 03:32:00: Copied E:\master\FULL_(local)_master_20120115_033154.sqb to \\sqlbackup01\sqldumps\SQLRPT01-RedGate\master\FULL_(local)_master_20120115_033154.sqb.

15/01/2012 03:32:00: Backing up MisData (full database) to:
15/01/2012 03:32:00: E:\MisData\FULL_(local)_MisData_20120115_033200.sqb

15/01/2012 03:32:03: Deleting old backup file: E:\MisData\FULL_(local)_MisData_20120113_033210.sqb
15/01/2012 03:32:11: Deleting old backup file: \\sqlbackup01\sqldumps\SQLRPT01-RedGate\MisData\FULL_(local)_MisData_20120113_033210.sqb
15/01/2012 03:32:11: BACKUP DATABASE [MisData] TO VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C01', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C02',
VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C03', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C04', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C05', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9
397-1396A465038C06', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C07', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C08', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C09', VIRTUAL_DEVICE =
'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C10', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C11', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C12', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C1
3', VIRTUAL_DEVICE = 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C14' WITH BUFFERCOUNT = 30, BLOCKSIZE = 65536, MAXTRANSFERSIZE = 1048576, NAME = N'Database (MisData), 15/01/2012 03:32:00', DESCRIPTION = N'Backup on 15/01/2012 03:32:00 Server: SQLRPT01
Database: MisData', FORMAT

15/01/2012 03:34:14: Thread 0 error:
Process terminated unexpectedly. Error code: -2139684861 (The api was waiting and the timeout interval had elapsed.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 1 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 2 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 3 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 4 error:
Process terminated unexpectedly. Error code: -2139684861 (The api was waiting and the timeout interval had elapsed.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 5 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 6 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 7 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 8 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 9 error:
Process terminated unexpectedly. Error code: -2139684861 (The api was waiting and the timeout interval had elapsed.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 10 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 11 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 12 error:
Process terminated unexpectedly. Error code: -2139684861 (The api was waiting and the timeout interval had elapsed.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 13 error:
Process terminated unexpectedly. Error code: -2139684860 (An abort request is preventing anything except termination actions.)
15/01/2012 03:34:14:
15/01/2012 03:34:14: Thread 14 error:
Process terminated unexpectedly. Error code: -2139684861 (The api was waiting and the timeout interval had elapsed.)
15/01/2012 03:34:14:
15/01/2012 03:35:26: SQL error 3013: SQL error 3013: BACKUP DATABASE is terminating abnormally.
15/01/2012 03:35:26: SQL error 3271: SQL error 3271: A nonrecoverable I/O error occurred on file "SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C:" 995(failed to retrieve text for this error. Reason: 15105).



And here is the corresponding windows error log

SQLVDI: Loc=TriggerAbort. Desc=invoked. ErrorCode=(0). Process=2144. Thread=13388. Server. Instance=MSSQLSERVER. VD=Global\SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C_SQLVDIMemoryName_0.

BackupVirtualDeviceFile::RequestDurableMedia: Flush failure on backup device 'SQLBACKUP_28A41D28-7302-47F7-9397-1396A465038C01'. Operating system error 995(failed to retrieve text for this error. Reason: 15105).