p.2 #1 · D800 cleaning / how clean does your D800/e run?
Mine had some spots so big you could see them on the LCD. I read somewhere a lot of video use exacerbates the oil issue - something to do with the extra heat. When mine got bad I had done a lot of messing about with video and one fashion shoot.
I never had to clean my D700 in 4 years of use on beaches and on location.
Thus, the added "beauty" of the D3/D700....No Video
p.2 #2 · D800 cleaning / how clean does your D800/e run?
I've had enough dust twice to run the full clean cycle. That took care of it both times. Otherwise, 5 months and no sensor swab or Eclipse needed yet... I change lenses as needed with no special precautions and shoot lots of landscapes at small apertures.
I do have a speck of dust in the viewfinder, but nothing worth the bother to remove.
p.2 #3 · D800 cleaning / how clean does your D800/e run?
ckcarr: focussing screen dust - UPDATE
To whom it may interest, just received replacement focusing screens from Nikon (Nikon Canada it is) and a quick swap accompany by a blast of Zerostat (camera's battery removed) and Giottos blower restored the viewfinder vision to like new condition.