I was recommending and using AVG 7.5. I am now in the process of switching to the latest Avast. I tried AVG 8.0 on my test XP Pro SP3 computer. I chose not to install the email scanners, Link scanner, and Web scanner. I had no problems except for the following: #1 - during an update the cycles reached 100% #2 - opening a folder which contains the additional installation programs used on the test machine resulted in a noticable lag after each reboot. Avast does not exhibit the same lags as AVG 8.0.