Hi My D5100 is a refurbished unit from Cameta in NY so the warranty is through them. I sent the camera to them on Oct. 3. Cameta forwarded it to the repair center at Mellville and it was returned to me the 12th of November. Keep in mind Sandra hit the area causing delays during that time.
My wife and I each have a D60 and we were both getting a little sharper photos with the D60 than I was with my D5100. It always seemed to me that the focus was a little off. Not a lot mind you, just a little bit. When I questioned this I was told that I needed to develop better technique using the D5100 than I did with the D60 because of the increased mp. Now I dont pretend to be any kind of a photographer but Ive been shooting firearms since I was out of diapers and it seemed to me that the principle was the same so it shouldnt be too hard. Well I bought a D7000 and with no change in technique the photos were nice and sharp.
I guess Mellville must have tweaked the focus on the 5100 a bit because the photos look better than they did before I sent it in. Either that or my eyes have changed. There was no documentation included with the returned camera so I really dont know what they did if anything. Trying times for them Im sure. Im surprised they got it back to as soon as they did. So, to answer your question, yes Im satisfied with the service. And Im very satisfied with Cameta. Stan