I excluded the "C:\WINNT\system32\wbem\" directory in Symantec antivirus autoprotect and the problem was solved for me.My system is Windows 2000 sp4, Symantec antivirus 10 and Backup exec 9.1.
"It is therefore necessary that you open a Voice or Direct Assist incident" (...) "Please note that you may be charged for this service." You should read : "We have spent a lot of time debugging our software and developped a patch, please use our pai...