SQL Backup Reporting a failure but actually succeeding

kepr00

Hello,
I am getting the following warning from Sql Backup:

Warning 300: Backup failed. Retry attempt: 1
VDI error 1010: Failed to get configuration from server. Check that the SQL Server instance is running, and that you have the SQL Server Systems Administrator server role. Error code: (-2139684860: An abort request is preventing anything except termination actions.)
SQL error 3013: BACKUP LOG is terminating abnormally.
SQL error 18210: BackupVirtualDeviceSet::Initialize: Request large buffers failure on backup device 'SQLBACKUP_5EF48A9E-9AB2-4638-970C-D830679059FA'. Operating system error 0x8007000e(Not enough storage is available to complete this operation.).

It happens infrequently. The Log Backup is actually successful.
I have over 500GB free. It is on a Windows 2003 Server. Sql Version is 9.00.3068.00.
SQL Backup Version is 5.3.0.178
Could you give me some idea as to the cause of this message?
Thanks

petey

See this document for details on this error.

Note that all exit codes less than 500 are warnings. For backups, this means that the backup succeeded, but one or more processes may have encountered non-critical errors during the backup process.