I'm not going Full Frame and if I was I definitely would not buy the D600....
I don't understand how Nikon would want to put a product out in the market place with a problem..
I have no doubt. Nikon will sort it out and by the next release(D400 maybe) it will all be in the past. Not to worry In fact I am buying a "Red D3200" for my wife for Christmas.
That's too bad. In the past two years I purchased a D7000 - no issues D800 - no issues left, right & center focus perfectly - D4(just got it) so far no issues. Prior to these the D200, D300, D700, no issues with them other than I wore the rubber grips of the D700 replaced them myself for $30.00. I still own & use these cameras on a daily, weekly basis without any problems. Remember folks Japan had an earthquake, Tsunami, & a radiation scare all within days of each other Nikon's factories were right in the middle of it all. I am NOT surprised some quality control slipped during the recovery period and some products were rushed to market(remember shareholders) I will continue to buy Nikon regardless. Nikon has always treated me with care & respect. I know that once again Nikon QC will be 2nd to none. Meanwhile instead of complaining I am out there having fun with the world's best camera(as eyelevel put it)