I'm having a really bizarre issue with my iPhone 4. I take a photo in the dark, the flash activates as normal, and I see the correct photo for a second or two before it 'moves' to the little thumbnail in the bottom left when it suddenly becomes 'flash-less' and is pretty much just a black square. This doesn't happen with every photo, which is kinda strange. Anyone else had something similar? It's as if it stores the correct photo momentarily but then replaces it with the non-flash version. Happens with Flash 'on' and 'Auto'.