Greetings: It has not been a good week. As I mentioned yesterday I swapped my hardware into an identical box as my original machine. Yesterday everything seemed to have returned to normal operation. I watched some movies, worked on some music, and so forth. Today I powered up the box, logged on to the net, downloaded the latest Csound CVS and started compiling. After a few minutes everything froze again, the machine was locked tight as a drum. I had to pull the plug to restart, but when grub came up my keyboard was frozen. I pulled the plug again and got my keyboard back after restarting. Now I'm running memtest again. I realized yesterday that I'd run it on only one RAM stick so I thought I'd better check again. However, at this point I'm starting to suspect a bad drive. But *two* bad drives in the system ?? As I mentioned in an earlier message, the machine failure occurred regardless of which drive I was using (RH9 on /dev/hdb, FC3 on /dev/hda). So I'm bummed again. Looks like it's time to bite the bullet and buy a whole new system. :( Best, dp