I see a lot of people ignoring antiviruses. Why do you need one if you keep ignoring it. Even an official CD might have viruses. The antivirus on the CD might have been identified recently, so the vendors, publishers and developers might have been unaware of its presence when they issued the CD. Granted, you can have false positives, but how the hell you going to know witch one is it? The "one" interested in infecting you, is betting on your ignorance...