First step to assuring there are no issues with VSS, is to run VSSADMIN LIST WRITERS, withing a CMD prompt.
IF there is a problem MS should show writers in failures, this assuming you have not rebooted.
If no writers appear to be in failure, and stil...
If you are refering to the process VProTray.exe stops responding when a user logs off from the terminal server using Backup Exec System Recovery (BESR) or when a user logs off from a terminal server the VProTray process causes high memory usage and t...