I have had this happen to me twice since upgrading to Panther. Everything will be running fine and then the computer just freezes, with a black message box that says to restart the computer and displays a power button graphic, it says this in several languages. Any ideas why this is happening - I never had any problems with Jaguar. I performed a clean install when I upgraded to Panther. When I restart the computer I get a flashing question mark. My manual says to restart the computer holding down the option key and then select the hard drive icon and then the right arrow icon. I get the arrow icon but no hard drive icon. The first time this happened I restarted the computer holding down the option + D key, but this last time it didn't work. HELP!!!