It gave me adwares that had to be eliminated with SpyWare both in regular mode and safe mode a number of times. ADware has a nasty habit of trying to sneak back into your deeper system (System 32). Once you get rid of Kazaa (if you did, indeed, install it), do a Norton Anti-Virus scan, a SpyWare scan, then go into "safe mode" and do these again. Do this several times, then it should be OK. This takes time but is well worth it. To get into "safe mode", turn the computer off. When you turn it on, press F8 continuously til the screen asks questions. All icons and text will be much larger while in this mode. But do both scans anyway. Then restart your computer in regular mode. If you're unsure about this, take it to the local shop. It shouldn't cost more than $40 and they can also get rid of other things gunking up and slowing down your computer.