From the Application log on the protected server-
Backup started at '3/25/2009 8:28:36 PM' failed with following error code
'2155348237' (Enumeration of the files failed.). Please rerun backup once
issue is resolved.

From DPM 2007 Monitoring Alerts
DPM failed to create the system state backup. If you are trying to create
the system state of a Windows 2008 Server operating system, verify that the
Windows Server Backup (WSB) is installed, and that there is enough free disk
space on the protected server to store the system state. (ID 30214 Details:
Internal error code: 0x809909FB)

Uninstalled Trend Micro OfficeScan without any effect.

Any suggestions would be appreciated.

Thank you,
--
Data Rescue 1