Hiya wsy. Gotta start off by saying that i don't have an iPAD running the game so all i can do is make best guesses...
First off, have you updated to
Version 1.2?
Also, you have any other apps running while you're playing? This game is a memory hog! Check out the developer's suggestions
here. And please post a follow up if that info is helpful to you. (
it'd give other iPAD players the will to play on)