it hasn't been closed, as I have missed it. please follow over here: http://nikonrumors.com/forum/topic.php?id=5517

as for NR reporting on AutoFocus problem, read the main blog and after that comment further - also check Facebook and Twitter as it has been covered over there.

So NIKON called about my D4 and said '..It's a problem they are aware of, there will not be a 'fix' until late May or later, and that the camera locks up when the blinking highlights and/or RGB histogram is turned ON'" Hmmmmm...... why do I not believe that?...

Sorry but i was scrolling thru some post and it had a link to the post i mentioned, i think it was on an admins blog site not sure, was to do with complaints, i will have a look, found it, the thread titled 'D4/D800 issues' has a bunch of threads related to issues, here is the link to the locked camera thread http://nikonrumors.com/2012/04/07/nikon-d800-locks-up.aspx/, there you go, loads of posts to help you suss it all out.

Any idea where I can find that post?

There is a very large thread regarding this topic, it was started by an admin guy, lots of culprits are examined, lots of folk complain of the same issue, dirty battery/memory card connectors was one, different types of cards are a strong favorite, i have started a thread to examine this possibility, cheers

that is the price you pay for being on the cutting edge----sometimes you get bloody! ;-)
I have both a D4 and D800 ordered from B&H--hopefully most of you early adopters will flush out the early problems!
It sure looks to be an awesome camera!!

Annoying, but that happens with new stuff all the time. Don´t worry, they will most probably be able to fix it soon. The Canon 5D3 has a light leak problem, 1D3 had some serious flaws, 7D had erratic focus problems for a long time. A Nikon D3X I know of sprayed oil inside the mirror box on day one and went for a long clean-up trip far away. Needless to say, the guy who bought that D3X was quite frustrated.

I just sent my new D4 in for service (!!!) as since day ONE - it freezes up while shooting. I tried both an XQD and CF, just the XQD and just a CF--and it still happens. Oddly, it happens while shooting at a normal pace, and not when i (during a test) fired off about 100 shots on high speed. The only way to 'unlock' it is to remove the battery and pop it back in. A friend has hers freeze up while reviewing photos! Something is fishy here and I hope they can figure it out for a $6000 item!