Has anyone experienced this as yet? Mine just broke today while photographing a XC race. Sounds like the camera in bulb setting but the shutter doesn't close. Got the ERR message in the display window, took everything off (lens, battery, card) and nothing fixed it. Took the lens off, lifted the mirror and sure enough, looks like a window blind that collapsed on itself.
Bought it nine months ago, sent in the warranty card but I'm expecting Nikon to tell me it's not their problem and it's going to cost me $$$ to fix.