Well, my issue is pretty much what it says in the title. GameCenter isn't registering new games. I dl'ed Fragger and others, and I'm not getting the "welcome back 'user name'" message, or seeing achievements or anything. The game doesnt even show up in GC. I've tried uninstalling and reinstalling the games, and restarting my phone. If I open an older game, like angry birds, the GameCenter message comes up right away. Does anyone have any suggestions? Thanks