I'm a newbie and I have the s3is digital camera. When recording a video the camera just suddenly stops recording after about 4-5 minutes for no reason. It has done this with a 2,4, and 8 Gb SD memory card. The batteries are fresh and the memory card is formatted. The settings are re-set to the factory default settings. Does anyone have a solution to this problem. The manual states that it should at least record up to one hour. Please help!