I updated to 2.2 OTA a few days ago and since then my camera doesn't work. When launched all I get is a black screen that sits there indefinitely. If I kill all running processes and try again the screen goes black and immediately returns to the home screen. I did notice that a few days ago it suddenly started working again out of nowhere, but the following morning it was dead again. I've tried a full factory reset but no joy. Does anyone have any ideas?