Moved to VirusScan Enterprise for faster support
This has now happened on the 2nd SQL Server in our cluster.
Hopefully someone with Enterprise experience will answer soon.
If you're unable to self-resolve the scanner timeout you're experiencing, I suggest contact Support.
If you're not sure what a scan timeout is, please check our Knowledgebase (kc.mcafee.com) and my blog: On Access Scanner: Timeouts