Gavor from FrenchiPhone could confirm earlier report of white iPhone 3GS turning "red" after having been used intensively. It does not seem that the device was overheating, as we have experienced iPhone 3G enclosure getting hotter when intensively used. Apple did not really officially communicate about this issue, but it should come in a near future as similar reports have already been posted. So it is either a production batch problem, then it will be fixed soon, or some components included in the white enclosure are turning red upon heavy thermal exposure (something not reported with the white iPhone 3G) and this is a more time-consuming issue.