I'm still using the iPhone app and was wondering why some threads, seemingly at random, cause the app to shut down completely. It sort of flashes, switches off and sends me straight back to the screen with all the app icons on it. Sometimes I will be reading a thread and get to a certain point in it and it happens, sometimes it just won't let me read a thread at all. Is it happening to any other app users or does everyone else use the mobile site now?