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Since this behavior is isolated to your iPad, I'd try the steps in our iPad troubleshooting assistant:
I am having the exact same issue as Minecrafter... Some real help would be appreciated. I work in IT at a school and we just purchased 1,200 iPads... Having an issue like this effect more than just me would be a complete disaster. Please look in to this issue. It's real. It's not right. Fix it. Thanks.