Deleting a picture: Right after you snap a pic, there is a garbage can on the side of the screen. Tap it before it goes away and the pic is deleted. If you wait, you have to tap the gallery and delete it from there.
It is that quick tap that got me. I snapped 5 pics then deleted the 5th. On 2.15 I snapped 1 pic, pressed the trash can icon, and it rebooted. I don't think it's the number of pics but it is definitely something happening when a picture is deleted.
For 2.15, I used Amon, wiped data, cache, and dalvik manually. I then ran vr superwipe. There is no freaking way the camera bug is from something residual. I even had a brand new class 6 8GB card installed because I thought my SD card might have an issue...