I have a D7000 which I sent into to Nikon repair right before Labor Day. Wasn't taking pictures and it displayed ERR on the top display. Mirror flipped up, but not picture was taken though but Mirror Lockup wasn't an option on the menu (it was grayed out - shutter, control board or both?).
Original online estimate: $257
Received by Nikon: 8/28
Original Receipt email and ack estimate: 9/2
New estimate on 9/8: $517 (dr)