And a follow up on what ob says above. After using Ad-aware, the free one, for about a year, and seeing how well it worked, I opted for the Plus version a couple months ago, only $26 or so dollars. It updayes itself as new defs come out and scans to prevent the malware, spyware from getting in in the first place, rather than scanning for it and removing it. I can do manual scans if I want, and I still do, both Ad-aware and spybot, and since I went to plus, neither As-aware nor spybot have found one bad undesirable, batting average so far, 100%. I like it.