I can't run LimeWire with Norton AV running. In fact, when I recently turned on Norton and tried to scan my hard drive, it froze. I restarted and tried to scan three times and it froze every time. So, maybe I have a problem on my hard drive, but I can't find it with Norton. Everything seems to be running fine otherwise. Except for Outlook Express. That freezes consistently a couple of times a week. I think having Virus protection is a great thing, but if it doesn't work or interferes with other programs, what's the use? Arrggghh...