I just got K200d and did not noticed in the beginning that there are some dark spots in the viewfinder. I'm not sure if it was like that out of the box. I detached the lens and I can still see the same spots. Seems that there is nothing on viewfinder glass or on the mirror, so i assume the spots are on the matte focusing screen. It's like a half circle that consists of extremely small dark spots. I can not really take a picture of it, but to the best ability I tried to make up one (attached).
What is it? Is it deadly? Will it affect focusing? What should I do with the camera?