JP234
When I was working for an Apple VAR some years ago, we were inundated with customers who had downloaded MacKeeper. While not a virus per se, it is definitely a virus vector, and these unfortunate dupes were experiencing malfunctions caused by the lousy code in MacKeeper, with malware attacks from hackers piggybacking on that bad code. As an Apple authorized service provider, we charged them $29 to remove all traces that MK hides away in the OS. Just deleting it won't do a thing. If you don't get it all, it just regenerates itself.
Lesson: never download anything you don't need, no matter how much the vendor tells you that you need it.
