Hmm, honestly i don't like it, i think it's a bit too basic for NG's style.
It's simple and doesn't have a humongous array of controls, which is good...but.
I think the inbox should simply be a small icon with say...an envelope on it, and it should only appear when there is a new message.
I also think the"log out" button could be a little smaller and inconspicous.
The "account options" button is absolutely fine though.
also I think the username needs a public profile link aswell, but that's just a nice touch, rather than a neccesity
Well, it's a nice feature, and is an improvement to the previous header, but i don't like the idea of it being like that from now on.