Well, I read online that a number of people are suffering from heating issues with there new 3Gs. I have been fortunate and appear not to have those issue at this time, but I don’t use the phone a lot either – nor do I leave it around.

They have already released a support article about acceptable operating temperatures:

http://support.apple.com/kb/HT2101

If this is indeed an ongoing issue, I am sure Apple will do something for everyone. If not, then I guess people will start loosing interest in the IPhone and maybe go to the Pre, Blackberry, or some other smart phone 😛