I remove virus's as part of my job. I'm a double agent for geek squad. I go to homes with computer problems. We run a scanner when we start working on a computer of a suspected virus. I took a talley of these scans. Between mid 2008 - mid 2009 I went to 96 suspected virus infections. 36 were actually infections. The rest were just slow computers and needed cleaning up. Of those 36 the people had Norton, Mc afee, AVG or nothing at all. I don't remember the exact numbers but it was 7-8 each. Then some other virus protections had like 1. What I'm trying to say is if you have one of the 3 listed above get rid of it. Norton and Mcafee slow your computer down as well as the fact that they don't do a good job. In the 5 years working at Best Buy I've never been to a house with a virus that was running SPYSWEEPER WITH ANTI-VIRUS. You can get it in a 1 or 3 user licsence for 39 or 49$. Well worth it. To remove a virus I have to charge customers 299.00, it sucks because if they'd spent the 39 in the first place I would be there.