I use Norton's (not a huge fan of it) Adware and spybot on my system. I also do NOT use IE anymore for the internet. Too many problems with it. I use Mozilla, virtually NO popups, no malicious spyware and no viruses (knock on wood). I also like some of the stuff mozilla can do. Favorite is what I call "Tab windows", I click the roller ball on something I want to open and it opens it in a tab. I can then look through the tabs, I have had as many as 20 open at one time. There are some negatives, mozilla cannot do some videos and play games on MSN for example.