I'm new here to this site and was reading about the same problems I'm having about full screen exiting on it's own. I saw that u all are turning off the AVG to see if that's the problem, well, I dont think it is because I am running a Norton 360 and on my other computer, i'm running Avast anit-virus and it IS still doing it to me. I dont think it's our anit-virus at all, there is some kind of problems going on in our computers and to me, i have a feeling it has something to do with the updates we get now and then. Just to let u all know that it's not AVG, cuz i'm running two other virus protection on two different computer and i'm still having that problems.