Lightroom 4 (and now 4.1 rc) on Lion wont recognize the D800's NEF files, while CNX2 recognizes them, but wont allow me to save any edits. I've therefore saved edits in CNX2 as JPGs, but Lightroom 4.1 wont even recognize those.
I've been all over the Adobe site and Flickr groups, and there's a lot of discussion about the latest ACR 6.7, but a) I don't think you need that for LR -- perhaps only CS and Bridge -- and b) it wont load on my machine anyway.
The fact that NNX2 is also having problems makes me think it's a Nikon issue rather than an Adobe issue, right?
A reward of good karma will be given to anyone whose information leads to the brutal bludgeoning to death of this problem.