Moved to VirusScan as that is what you mainly talk about.
It slows things SO BAD!
It freezes my computers.
That shouldn't be happening, what operating system is this and are you up to date? How much memory is installed on the machines(s)?
Have you had any indication that perhaps there is malware on board?
Scheduling scans? HA! Forget about that. NEVER happens
That's because you probably have it set not to scan when the computer is busy, that can be adjusted in settings.
Remind me to update
If updates were set to automatic there would be no reminders. Again that can be altered in settings.
Try running the Virtual Technician to see if it finds and fixes mistakes and one hint to ease up background scanning, never store emails in your desktop email inbox....create sub-folders for storage.
Otherwise the antivirus will be constantly scanning them.
Virtual Technician: http://mvt.mcafee.com/
If that doesn't help I will try to alert our in-house support person to take a look at this thread. Or alternatively you can call Technical Support yourself, it's free of charge.