Running KAV 5.0.527 on my wife's XP Home machine. Just for grins, I checked the logs and discovered a multitude of caught trojans (mostly the idiotic ebay variations) and other assorted nastitudes. If not for this superior piece of software running as well as it does, I'd be blessed with the plaintive cry of "There's something wrong with my computer"! Kudos to the good Kaspersky people. Yes, I know that there are other other very fine programs, but the power and silence of KAV has my respect.