I am in a serious problem. I can't able to shut down my iPad. I recently notice this problem. At first I was thinking that it may be a problem of shutdown key. So to make that sure I drain my battery completely and it turned off. Than I try to open it and amazingly it start up. But then I can't able to shut it down again. So I am into a middle of dilemma, am I doing something wrong or the button broke. But I don't understand If the button is broke than why I am able to start it up. I still have warranty but if the button is not broke and I am doing something wrong than I will really look stupid in the middle of apple customer care. So eagerly waiting for your advice.