The AVG Trap
You failed to uncheck the Include AVG or sometimes other search and toolbars. That is a common error. Once you install AVG it is a nightmare to get rid of. Uninstall it from Windows it will still be in other browsers like firefox or google and has to be removed from there. CNet is notorious for including these little install when you install any program. I Use Advanced uninstaller Pro Free from CNet or the vendors website. Watch out for that little box on them that ask you to blindly install even legitimate programs and use the 2nd option and uncheck all options.