Recently started using Skype for the iPad. works great most of the time. Occasionally I get in a situation where I'm in a video conference and I can only see the far end picture (ie. The person I'm talking to) and can no longer see what the camera on my side is recording (either myself or a view I'm trying to share on the rear facing camera). There doesn't seem to be an option to switch this "picture in picture" on or off. Anybody have insight into why it disappears and how to correct it?