My iPhone 4 (IOS 5.0.1) will not record video. You can open the camera and successfully take still photos. When you change to video and hit the record button, the camera just freezes; no counter and the buttons at the bottom of the screen is greeted out. I can only hit the home button to get out of the camera app. I've rebooted the phone, and there is plenty of available space. Any ideas? BTW - the phone is NOT jailbroken.