Hi, While i was using AIM app through 3G, I noticed the iPhone 3G 8Gb became very hot. Similar like having a macbookpro on your lap. I was wondering what was going on. Then all of a sudden, I got a black screen with a yellow triangle sign with the text: Temperature - Iphone needs to cool down before you can use it. I could slide to do emergency call only... Did anyone had a similar experience? I was only using 3G for 10 minutes ! I cannot believe this.