So I picked up my 3GS today and right after the apple person gave me my phone I started to type in my mobile me settings. Right in the middle of typing my email address my screen goes dim and it said something along the lines of iphone wants to power off and at the bottom of the screen there were two buttons, one said accept and the other said cancel. I naturally was very confused and the sales person standing next to me pushed cancel without giving me a chance to really read what it said or take a screen shot. It was NOT the slide to turn off screen and I did not touch any of the iPhone's hardware buttons. It just randomly popped up. I wish I could remember exactly what it said. Has anyone experienced anything like this? It was really weird I have never heard of anyone seeing that screen before and the lady said she hadn't either.