Since upgrading to Kernel 2.6.11-1.14_FC3 my system:- AMD XP2200+ 512MB ASUS A7V8X has been locking up every 3-5 days !!! When it locks up the Gnome display is completely frozen and remote SSH inbound doesn't respond. /var/log/messages doesn't show any cause:- May 2 01:55:01 ldesk crond(pam_unix)[31676]: session closed for user root May 2 01:55:01 ldesk gconfd (andrewg-17471): Exiting May 2 10:12:24 ldesk syslogd 1.4.1: restart. May 2 10:12:24 ldesk syslog: syslogd startup succeeded May 2 10:12:24 ldesk kernel: klogd 1.4.1, log source = /proc/kmsg started. May 2 10:12:24 ldesk kernel: Linux version 2.6.11-1.14_FC3 (bhcompile@xxxxxxxxxxxxxxxxxxxxx) (gcc version 3.4.3 20050227 (Red Hat 3.4.3-22)) #1 Thu Apr 7 19:23:49 EDT 2005 The last two occurrences have been similar. memtest86 passes without problem on this system. With 2.6.10-1.770_FC3 and previous 2.6.10 kernels the system stayed up and working for weeks on end. The other problem with 2.6.11-1.14_FC3 is the ntpd needs restarting 10-30 times before it runs continuously --Andy Gray Fedora Core 3 Also testing FC4test x86_64 on AMD 64 3400+ laptop