Server got rebooted itself.

Hi all,

One of our server got rebooted this Sat itself I did check the logs and could't find a lot. But something related to gconfd.
Feb 7 12:47:36 test gconfd (root-4349): Exiting >> So not very sure why gconfd may cause the reboot???
Feb 7 12:47:37 test gdm[3984]: Restarting computer...
Feb 7 12:47:38 test shutdown[3984]: shutting down for system reboot.

I found some blogs saying that the gconfd creates a folder under /tmp folder with 777 permission but in my case these gconfd-root folder has 700 permission.

Any ideas?