Originally posted by kamisu Lammie200, I have ordered the 2 yrs extended warranty too (20$), but it looks even the original warranty does not cover dust on focus screen, as some say, or at least does not worth the trouble. It looks like it will happen all the time. Well, on a brand new one, not pleasant.
You get one free cleaning and adjustment as part of the warranty. So you can rest assured that someday if you ever want to part with your camera for a few weeks (and pay for shipping) you can have it cleaned. That said, just shipping a camera around can probably cause dust to dislodge. My camera had dust on its sensor when I received it new. Blew it off, no problem. As some have said, the top of the focussing screen is not sealed so dust can find its way there. It isn't completely exposed like the mirror and sensor, so it is less likely to recurr as often.
If I were you I would live with it for a while and research the focussing screen replacement procedure. There are even some videos that show how its done. Continue to ask questions here on the forum. You may eventually feel comfortable doing it. If you have good eyes, good light, steady hands, and understand a little bit about industrial design, it really is not that difficult to drop the screen. But shoot first, ask questions later!
P.S. You might want to get a rocket blower anyway. As many have said, dust is an ineviability, whether it will reside on the mirror, sensor, or focussing screen. Many people here will recommend a rocket blower as the first method of taking care of it.