Have you checked you Messaging queues in "Services and Applications > Message Queuing > Private Queues" ?
I had to pull out all the EV archive tasks, uninstall the MSMQ reboot, and reinstall MSMQ and remake all my archive tasks and this went away. and then there was some resetting of vaultadmin credentials on the Admin and Directory service.
i was pointed at this page by a tech
http://seer.entsupport.symantec.com/docs/276082.htm
hope this helps some.
at least points you in the right direction..
But as others have said... a support call is probably a really good idea but if you see the MSMQ's are filling up and not emptying on the EV server this might be the right direction...
Message Edited by nick reid on 05-10-200712:04 PM