I just want to share an experience with everyone just in case it comes up with your camera. Recently my D80 started trying to focus, the lens would move but when it stopped it would be out of focus. I tried different lens with the same results narrowing it down to a camera problem. I checked all the usual things like auto focus being turned on and the focus lock not being turned on and several other things. Last night I realized that if while I was pushing down on the shutter, if I also pushed on the AF-L button just to the right of the viewfinder that it would pop right in to focus. This would get it working but was unacceptable. I had looked through the entire menu and could not find anything that could be causing the problem.The bottom line is that I finally went in to the menu and pressed the RESET button and everything now works just fine. I have figured out many problems that have come up over the years on my D80 and D90 for myself and others but have never used the reset button to correct the problem. Now that you have read the answer to the problem you may be saying I would have tried that right at the start but I know that I didn't think of it first and believe a lot of others might not as well so I just wanted to share my learning experience so that maybe a few others may benefit, Jeff