title: iPhone - Autorotation doesnt work after playing youtube video in other uiviewcontroller
body: <p>I have a problem with autorotation of a viewcontroller (Inside a tabbarController, this is the only viewcontroller that should autorotate) and this works by setting the <strong>shouldAutorotateToInterfaceOrientation:toInterfaceOrientation</strong> to just portrait in the AppDelegate and 
  presenting the view that SHOULD autorotate as a modalViewcontroller and<br>
  setting  shouldAutorotateToInterfaceOrientation:toInterfaceOrientation in that viewcontroller to YES (=All)
  This works fine, BUT: after i played a youtube video (in a different viewcontroller) and go back, IT STOPS WORKING! I checked everything, and the hierarchy etc, all seems the same but shouldAutorotateToInterfaceOrientation doesnt get called anymore!
  All help/suggestions really appriciated!! Thanks!!</p>