Greetings: I've been having some problems with my desktop machine during and after booting into Planet CCRMA RH9. At first I started getting some kernel panics booting into the system, then I started having trouble during operation of the system. X would suddenly freeze shortly after I started it, usually after the first mouse move. Okay, so I don't panic because I have another drive in the same box running FC3, so I figure I'll just boot into that system instead and transfer files before everything heads south. At first everything seemed fine on that drive, but soon after I started using it FC3 started showing the same symptoms with sudden reboots and total freezes of the machine. I've been able to transfer a lot of stuff to my laptop via the local network, but mounting the RH9 drive is very dangerous, things can freeze at any moment. Alas, there's still stuff on that drive that I'd like to retrieve. So there's something wrong with the box. Can anyone point me in the right direction to begin troubleshooting this machine ? Could it be RAM ? The graphics card ? Or what ?? And how can I test things on the hardware side, i.e., what utilities are indicated ? Any and all suggestions vastly appreciated. Best, dp