D600, advise needed. Thank you.

Hi I really want to get your advises on this. I received D600 kit from Adorama last Friday. I charged battery and mounted the kit lens. The second picture I took, I got big pieces of dust. (see pic 1) these were taken care of with blowing. Then a few pictures later, more dust spots (maybe I should call them debris because they are not from outside the camera) shown up and they are visible under both F22 and F11 (see pic 2 and 3). Air blowing couldn’t clean them all but in-camera “Clean Image Sensor” seems removed a lot of them. But after 100 shots, more small spots shown up at up-right section and but in-camera “Clean Image Sensor” and air blow could not remove them at all (see pic 4). Are they oil spots? I don’t know.

Pictures are in the link: http://www.flickr.com/photos/joshua_zhu/

I am from D90 and I want to love my new D600 but I feel already too much trouble me. My D90 never has this kind of issues.  My questions are:

1. Is this normal for a D600? I have read discussion on this issue but what I want to assess is if my situation is worse than normal D600s will face?
2. If I want to keep the camera, should I send it to Nikon for clean now or should I wait longer till all debris and oil come out? Will wait longer make clean job more difficult? I live not too far from El Segundo where I heard there is a Nikon service center so I guess I can walk in for cleaning if it is coved by the warrantee.
3. Or should I return it to Adorama? I have never returned an on-line shopped merchandise. It is shame a Nikon would be the first one. Any one has experiences on camera return? Any trouble doing this?

I dont want to open another debate just want to hear some advises in my situations. Thank you. -Josh