When I built my PC, i had no firewall, or SP2, or a virus scanner. I downloaded so many .exe files, cause I was dumb. lol. Then I downloaded, yes illegally, Norton Anti-Virus 2003 Professional. Ran it, found 200 viruses!!!! It tried to fix it, but screwed up my PC more, no programs worked, like Nero, or IE, or Firefox, well you get the idea. I searched all of those viruses on google, checked their size, i had 11.45 GB of viruses!!!! They kept growing, growing, until Windows got ****ed up real bad. Thanks Kazaa Lite, bastards. lol.