malwarebytes is very good. used it today after some malware snuck thru on a youtube downloader download. what that did was it kept popping up an ad called positive finds on every page I opened. once you click on it and go to the website is when it really puts some garbage on your computer (i found out online, not by experience.) it wasnt in the registry, so i uninstalled chrome, used malwarebytes to find and quarantine the little nasty and reinstalled chrome. *remember kids* download from a good site like cnet downloads or the home website. i didnt get any prewarnings about the site i downloaded from, but i should know better than that. the malwarebytes also helped find chrome extensions that arent necessary for the computer (ask.com toolbar was one, i forget the other two.)