I guess i am over saving to purchase this body. I have owned my entry level D3100 for 3 years now and not once have i experienced any of the above mentioned. I do however do light cleaning every once in a while, but nothing as extensive as what has been explained in this thread.
I paid 600 dollars for my setup, and zero issues, if im going to spend 2000 dollars, i better have the same quality control if not better!
Now i might start browsing D700's or even 7000's again, not in the mood to deal with such issues. Its a shame considering what this camera can do, but not worth dealing with such issues, esp when i have been planning and saving to consider.