So I was dumb enough to install and give Mackeeper a whirl. It did not barrage my notebook with ads, instead it hijacked my mouse so it wouldn't respond (like I was fighting with someone else for control) and my desktop would go back and forth between the dashboard screen erratically. I removed MacKeeper and associated files per instructions I found on other threads here (got the library files, cleared the keychain, activity monitor, uninstalled, empty trash, ran adwaremedic with zero results). This helped the problem, but it pops up again after around 15-20 minutes of use. So it seems like there may have been a virus delivered with it. Should I download something and run a scan or just take it into a genius bar? If the former, please recommend a product. Thanks!