So my new D300s worked fine about a week ago when I took the animal shots in San Antonio. When I got back home I sat the camera on the table and it stayed there until yesterday when to my horror, I discover it no longer powers on!
The number of remaining shots was still showing, so I thought maybe the battery was dead, and switched it out with a fully charged one. Nothing. Not even the remaining shots showed anymore. I tried both batteries fully charged with and without the cards or lenses. Nothing. Even the viewfinder is showing no power. the lcd focus indicators that are normally clear are now neutral showing now power at all to the camera.
So, now I have to send it in to be repaired when I get back home in a week. It may be several weeks before I post anything new as a result.