I know this is an old thread, but I thought I'd follow-up. I just got a D2G, and while it clearly needs the extended battery (four hours from full charge and it's down to 30%--clearly the thing should come with the extended battery preinstalled), really my only complaint in the heat issue.
It gets VERY hot near the camera. Not too hot to touch, but uncomfortably hot, like I'm holding on to a hand-warmer.
I previous had the Droid X, and had two different handsets. One got very hot when processing and the other didn't. This leads me to think that not all handsets are the same with these heat issues.
Should I just accept the heat issue with the D2G, or is it possible that a replacement handset will not get a hot? I don't want to replace it and have to set everything up again just to have it have the same issue.