3 D90's later..all 3 having problems (quite notable as well) with AF straight out of the box. Hassles sending bodies off, being without a body for weeks on end. Emails, phone calls, fighting with a seller to get a refund/credit (which I got eventually), a flash that got stuck on the hot shoe. The list goes on, I could almost write a book about it "My Nikon nightmare"
I gave up trying to buy a D90 body because after 3 tries if you can't get one that can hit a target in broad daylight, it's just not happening. So out of pure frustration (and the obvious need for a reliable working body for tasks coming up very soon) I bought a D7000 in a desperate last bash to get a body that worked.
I can happily report (so far) that the AF is right on target. There never was anything wrong with my lenses, they are all spot on with this new body with 0 AF adjustments. It just nails it..
Huge sigh of relief. I can tell you this was not a lot of fun at all, I'd not wish it on the most ardent die hard SLT fan
Might actually take some photos now as I don't have to peep every shot to make sure it's not in focus!