I only use the Windows firewall anymore, plus the Linksys firewall. I also use the McAfee SiteAdvisor plugin with Firefox. Handy when doing a Google search to know which sites to avoid. Somewhat going along with jokeworm, I also run CCleaner on a regular basis. Even if you have your browser set up to not accept cookies, you are still going to get them, some sites insist you take them to use the site. You have the choice of either not going to the site, or accepting the cookie. However, there is no reason to keep the cookie. CCleaner will get rid of them. I run other spyware programs every once in a while just to check, and I used to run several different ones because none of them seemed to catch everything. However, since I started using CCleaner the rest of them seldom find anything.