My iPhone 3G is freaking out at times. It will start showing the power down screen or re-booting on it's own. When it gives the power down screen, if you try to power down, it goes to the main screen, and then takes a pic of the screen and stores it in photos. It will also begin storing photos of whatever is on the screen during one of these "fits" if you hit the main button on the front bottom of the phone. If this happens while on a call, it will end the call and take a photo of the screen that shows while you're on the phone wiht that person's name and "end call" button. This happens about once a week, and once it starts it goes on for an hour or so. It WILL NOT let you re-boot by pressing the power button and main button together like you usually can.