Aaarggghhh!!! I've just switched my pc on to do some mumsnetting while ds is at preschool and my antivirus is saying it has been tampered with and needs reinstalling. It did this last week, I rebooted and it was fine, like nothing had happened. I do virus scans once a week and nothing has ever shown up... I don't understand!! I also have no idea how to uninstall the antivirus, is there a button somewhere?! TIA