On Thu, Apr 10, 2008 at 5:06 PM, Linux <linuxlist at gmail.com> wrote: > > Every 59 minutes (maybe every hour) it reboots without any logs, > without any traces and unfortunately with breaking software raid. > After reboot dmesg does not have any strange entries. I have several both CentOS 4.1 and 5.1 servers in product no unintended reboot issues. I generally install with as few packages as I can and add back what I need, and carefully review which daemons/services are running and run as few as possible. Might try reviewing what services you have running: chkconfig --list | grep 3:on and try disabling a few at a time to see if shutting down any particular service changes behavior which would help narrow the issue. I did have an issue with NFS under CentOS 4.x that under some conditions locked the NFS host and it had to be manually rebooted. Brett