To my horror, I discovered three faint dust spots, each which would be about 1/2 inches on a 9.5x14 print, on my D300 which is barely three weeks old and has been shod with the same 18-200 vr almost all the time. I've done the mirror-lockup thing, blasted the sensor with a Giotto Rocket and have done the dust-off routine on startup all the time, yet the dust spots still are there. Oddly, the Giotto routine works wonders on my D200 and any dust spots to show up there are more pronounced yet much smaller than on the D300. Short of shipping the D300 off to Nikon, any suggestions? I might just have to deal with the dust spots with the clone tool in Photoshop.