Shit I have a switch w/firewall, mcafee antivirus, and zonelab firewall and I still got hit by something from Kazaa that totally corrupted my hard drive....lost everything. Everyone I know says they have problems w/their computer running slow and unstable w/Kazaa running. Be careful using Kazaa virus sharing network. WinMX is not as fast but it sure is a hell of a lot safer. You only get the type of file you are specifically looking for, not a shit load of eroneous files. JMO...based on experience.