Backup Exec failing error: 0xe0008527 – VERITAS (VSFW) unexpectedly failed

Hi Guys. Had an issue where backup Exec failed daily although it looks to have backed up all data. The following error message is displayed. Job ended: Monday, 2 November 2009 at 1:27:47 PM Completed status: Failed Final error: 0xe0008527 – VERITAS Storage Foundation for Windows (VSFW) unexpectedly failed. Check that the VSFW service is.