NetBackup and McAfee VirusScan

I'm looking for information about NetBackup 7.x and McAfee VirusScan exclusions. Are there directories and processes that should be specifically excluded from any kind of scanning with McAfee? We're seeing "weirdness" on our MS 2003 file server cluster running McAfee VirusScan. It seems I came across an article a very long time ago about exclusions that should be in place, but I'm having trouble finding it now.