InFin,
I have not had a virus, but had hell with compatability problems with McAfee. Until I removed every single bit of the McAfee software, I kept having problems with freezing, crashing, boot-up, shut-down and so on. I now have Norton Antivirus 2000 (downloaded version), which gets updated every 10 days. You don't say if you had PC-illin updated regularly. Some PCs are just bitches with the odd bit of software