title: MPMoviePlayerController showing black screen in iOS 5 only
body: <p>I m downloading a aac file and playing it in MPMoviePlayerController with following code</p>
  
  <pre><code>movieController = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL fileURLWithPath:self.filePath]];
  [self.view addSubview:movieController.view];
  CGRect screenBound = [[UIScreen mainScreen] bounds];
  CGSize screenSize = screenBound.size;
  movieController.view.frame = CGRectMake(0,0,screenSize.width, screenSize.height);
  [movieController setFullscreen:YES];
  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(doneBtnMediaPlayer:) name:MPMoviePlayerWillExitFullscreenNotification object:nil];
  </code></pre>
  
  <p>movieController is (nonatomic,strong) class property</p>
  
  <p>this works fine in all iOSes except iOS 5 (and iOS 5 simulator).
  In iOS 5 it shows black screen and file is played in background.</p>
  
  <p>Another thing i have noticed is, when i run application over already existing app then its works fine on iOS5 also. But when i delete app from device and then run it, at that time it just shows black screen.</p>