So besides the white iPhone "3G" cracking issues on it's housing. There seems to be another issue now, and that is as you can see above a 3GS, with brown on it.

The case with this one is that when the iPhone overheats with the white one apparently over a week of time, Today (Friday) being the one week launch of the iPhone "3GS". Only been one case and apparently it's already been sent in for analysis and could/SHOULD get a replacement phone

If you look on the pictures you can see where the battery outline on the phone, should've went with black buddy! :)

via MMi