Hey! I recently installed gamecenter via a tutorial from here on my ipod touch 3g 4.0 ... But Now when I try to play a u2b video on youtube my ipod and friends iphone goes into safe mode! Or when trying to play another video via safari only safari crashes! When I installed game center I put the .app into var/private/stash/applications/ and set the permission to 0777 on frensh.Iproj folder and gamecenter file... Please help!!!