Why is it that MMF2-generated Windows Phone Apps (at least the ones that I make hehe) freeze everytime the user presses e.g. "search" button on their phone, one of the three buttons on each WP device, which launches the Bing search, and then press the back button to return to the app. The app has freezed and doesn't react to any input. The only way to get it up and running again is to press the home/windows button and relaunch the app. This is not very good user experience.