title: iPhone - UIImagePickerController shows a white screen sometimes
body: <p>I am using a shared instance of UIImagePickerController in my application. I am using the Camera Roll as the image source.</p>
  
  <p>Sometimes when the image picker opens, instead of seeing the photos gallery, I am able to see only a blank white screen. This issue is not reproducible every time and happens only some of the times.</p>
  
  <p>Has someone else faced this issue? Is it the memory usage? I checked the app with Instruments while testing on the device but memory doesn't seem to be the issue.</p>
  
  <p>Thanks for any help.</p>