I got my D800 last July and thought that by then the focus problem would be resolved, but I believe that I also have the left-focus problem. Hearing all the horror stories, I have done nothing, for fear of having a poorer operating camera returned to me. My solution - avoid use of left focus sensors. Works for me but not the solution I would prefer. Nikon here in Vancouver, BC tell me they would send the camera to Toronto for repairs. I find that pretty poor service from Nikon. I expect better than that.