1st no one said to turn your AV off.  For those JUST having issues with screen display & those who just have AVG8 - FULL VERSION - turning the web shield off solves this issue & ONLY them does this apply.  By turning off the Web Shield you are NOT disabling the anti-virus - anti-spam portion of the AVG8 ONLY!

Since you don't have AVG8 you have no idea of what I speak of.