I have been using Nikon D7000 for 10 months now with around 32000 actuations. I upgraded from d5100 as I needed built in focus motor. But, I think that was a mistake. It worked fine till 25000 clicks, after that, this Nikon Body has been attracting dust in its sensor after every 1000 clicks or so. I have been visiting Nikon Service Centre at Jaipur almost regularly for last two months.
While many people have got good piece which does not attract dust, but I also found many of my friends who have similar experience, so I assume Nikon has sever quality control issue with this DSLR body.
I do not recommend this DSLR body and as whole, I do not recommend any of the Nikons new DSLR bodies as all of them have problems. D800 has focus issue, D600 dust issue which Nikon has accepted and put out an advisory. I think Nikon should have accepted this dust issue with their D7000 only and many like us who have been facing dust/oil issue with d7000, would have been benefited.