Responder a:"err" message on the display, the answer is not clearI have a D80 bought october 2008. The Err problem occurred after a year of two of (light) use. I got it repaired at the regional Nikon service center for like 200 euros. This year again the same Err problem, repairs would costs again 220 euros. It's hard to tolerate this from a semi-pro SLR.