On my iPad2 I noticed if you touch the left or right edge of the screen, it will sometimes act like you presssed it on the opposite side of the screen. I noticed this during an intense game of pac man (lol). I then played with a more visual app that follows your finger around. If I press near the left border, I can see it on the opposite side of the screen and visa-versa. I read there is no calibration for the screen at all. Is this by design, or should I take my iPad2 and get it replaced? It is only 2 days old.