Sometimes my iPad touch controls lock up for a moment, where no touches register. I don't think it has anything to do with how clean the screen is or what other apps are running. I think its either an inherent glitch in iPad or else my particular iPad has a bad connection or something. I've heard of other iPad owners having this glitch but nobody knows how to fix or work around it. Not a big deal unless you're trying to win games and the controls lock up when you're trying to clutch a win. Would the Genius Bar even look at this if I can't easily reproduce the problem?