I have this stupid adware on my computer, and I haven't downloaded anything apart from a game from Steam this week, and all of the sudden, I have this thing called "SauleePPluso" under my extensions. No matter where I click on a page (even here on TH), I get popups and all of this crap now. I ran ADWCleaner to no avail, I checked through my registry for any changes, and there's nothing. What should I do?