I was wondering if anyone here has experienced what is now being called the D200 "Dead Battery Syndrome". This is where a fully charged battery suddenly displays as low or dead and all camera function stops. Turning the camera off and back on generally fixes it but just temporarily. This happened to me this past weekend while using the 200-400VR--with two different fully charged batteries. Apparently its becoming more and more common (there are threads on DPR and Nikonians) and no one (including Nikon) can figure out what's going on. Some say it started with Firmware ver. 2; some think its a contact/lens mount issue...but there seems to be no consensus. It happens mostly with longer and VR lenses, although I'm not sure that's a constant either. For the moment I'm just going to wait and see if Nikon comes up with a solution, as I hear that people are sending in their camera two, three times for the same issue and it is not getting fixed. But its worrisome. I missed some good shots this weekend because of it. Oddly, the other problem I had a while ago with the 200-400VR--the refusal to autofocus--has not recurred (knock on wood!) anyway I didn't find any discussion on the Cafe regarding this issue--is there really no one here who has experienced it?