computer that I lent out and installed it on a few others and no problems. I use the same combination to clean up my friends computers. Works well. But after using my Linux computer for a while, My windows computer feels like a slug. It's time to make Linux my main computer. Had a virus a while back that avg would stop but then the virus would just go dormant and scans couldn't find it. But every time avg stopped it the notice displayed it's directory location. Tracked that sucker down the old fashion way! Home PC I use Microsoft Security Essentials and common sense when browsing the internet. Malwarebytes provides a weekly on demand scan. At work we run Webroot SecureAnywhere. It uses &gt;5MB RAM with no impact on the CPU. There is no need to download daily virus definitions because it's always connected to their "cloud" servers for zero day threats. For an already infected PC I like to run the Kaspersky boot rescue disk. Then reset web browsers / hosts file / TCIP connection. Follow up with AutoRuns and ProcessExplorer and conclude with a scan from Mawarebytes. Infection gone! Malware Bytes AntiMalware is probably the best at the second opinion antivirus. i had a virus a while back that actually infected my computer that norton didn't catch straight off (yes i use norton 360). by the time it did catch it what it had intended to do was done: disable all administrator rights i had. i couldn't