I was using my ipad and logged out of the app I was using. I noticed the clock was about 5 minutes fast (since seen the thread about this) and decided to see if there was anything I could do about it in settings. When I tapped settings the 2 panels loaded, but everything on them was blank. Nothing else happened and the clock has stopped updating. I have tried turning off the ipad by holding down the button at the top for over a minute but nothing changes. Has anyone any suggestions as to how I might reboot it? its a wifi only ipad.