So my linux machine keeps crashing, without so much as a bye or a leave. I've tried and tried and failed again to work out whats happening. Any help would be much appreciated.

Linux chai 2.6.29.6-0.24.smp.gcc3.4.x86_64 #1 SMP Tue Mar 9 05:06:08 GMT 2010 x86_64 x86_64 x86_64 GNU/Linux Openfiler

Here is what the /var/log/messages file says at the time of the latest crash. Nothing that unusual - just greg logging in and out via samba. You'll notice there is a cron running for root every minute - ignore this - this isn't the issue either it was some check I've been doing to discover its problem.

Jun  2 10:32:01 chai crond(pam_unix)[16529]: session closed for user root
Jun  2 10:32:49 chai samba(pam_unix)[15454]: session opened for user greg by (uid=0)
Jun  2 10:33:01 chai crond(pam_unix)[16537]: session opened for user root by (uid=0)
Jun  2 10:33:04 chai crond(pam_unix)[16537]: session closed for user root
Jun  2 10:41:40 chai syslogd 1.4.1: restart.
Jun  2 10:41:43 chai syslog: syslogd startup succeeded

That restart was called manually by hand - by clicking the restart button on the box. So basically messages isn't revealing many secrets. dmesg only shows from startup.

If there is any output I should paste. Just say when and where and it'll be done.

Thanks for your help! Tim