For what it is worth, I got the d600 and was standing up for it and saying that the dust/oil issue is normal but now at 2,888 shutter count I see that it is unusually more and I also own the d70, d90 and d7000. If you check out my gallery I just uploaded some nice photos showing my fun fun dust/oil. This was after a cleaning with a blower. I plan to wet clean soon but to anyone that thinks this is normal, it is not. I do hear that the issue should calm down after 3,000-5,000 shutter counts so lets hope that is true. Before you ask, I am a paranoid person and very private and it is 330am and I did not feel like going thru exif and manually deleting serial number so all exif data was removed to make my life easier. Exposure was reduced and contrast added to show dust.