The advisory on the Apple website indicates the temperature warning screen is featured on both the 3G and 3GS, so what seems to be the fuss? There are not a lot of 3G owners complaining about the built-in temp alarm triggering, so heat must not be a problem. And doesn't the 3GS run at 600 Mhz as opposed to 624 Mhz for the older 3GS?