Install the package "sysstat" from the installation media. Then do `chkconfig sysstat on`. By editing /etc/cron.d/sysstat you can make it run more frequently. (Every 10 minutes is the default, for an unstable system you may want to turn that down to every minute or two.) That'll give you very, very detailed logs of hardware statistics. You can use the command sar to display it. `man sar` or look at http://www.die.net/doc/linux/man/man1/sar.1.html for more info. So, yeah. That's a good general tool for system instability debugging. In this case, I think the mem suggestion is probably right. - Ian -----Original Message----- From: Kshitij Velhal [mailto:kvelhal@gmail.com] Sent: Fri 9/16/2005 6:08 PM To: suse-linux-e@suse.com Subject: [SLE] Troubelshooting system freezes - SuSE 9.3 with KDE hangs frequently Hi folks, I would like to know the ways to debug system freeze on linux (SuSE 9.3) Pointers on what log files or config files to check to determine possible cause Generate verbose debug info if required.