Help! Suddenly I have a problem. At times when I open an email or an app. It seems like the iPad crashes as it goes back to my opening screen. This has been happening for a couple of days now. I first thought that it was my server playing up. But why would this happen when playing a game such as 'Angry birds'? This has also happened when writing a text message and I loose what I have written and have to do it all again.