I would get rid of AVG. Use some other AV. Get rid of all toolbars and if possible use alternative browser (anything but IE and if you *must* use IE please upgrade to version 8 with all patches). Update all your microsoft patches to latest level, ensure you have original copy of windows, firewall (get something [outpost is good]) and AV. If you are looking for *free* version of AV get - http://www.microsoft.com/Security_Essentials/ - Make sure you download from Microsoft.com only!