I started having the same camera problem, and also noticed the accelerometer wasn't working (didn't automatically bring up phone when display rotated, wouldn't detect orientation with phone app, etc.), and the slide switch often took a long time to blank the screen. Tried removing apps/chkdsk/reformat/reflash and nothing changed. I had noticed battery life decreasing, so I charged externally multiple times also. Just changed to a new battery and now everything is working normally. At least I got 7 months out of the original. Now I'm waiting for the USB connection to fail