I have a 2G. The camera was working perfectly until I have downloaded all the images to my computer and clicked on the option of erasing them from iphone after download is complete. Since then, when I take a shot, it seems like it is working but then in the Camera Roll there is just an empty frame, no images. If I take 5 shots, then I would have 5 frames but they last for a couple and seconds and then disappear. Would anyone know the reason and how to fix it? thanx