Server restarts on his own

[ticolocoro]

Hy all,
I have a problem with one a server installed with Debian 3.1, that is restarting almost every day at the same hour, 6,25 AM. Here are the messages obtained with
#cerberus:/etc# grep -C 5 restart /var/log/messages

.....missing displays....
Oct 6 06:25:27 cerberus kernel: device eth2 left promiscuous mode
Oct 6 06:25:27 cerberus kernel: device eth2 entered promiscuous mode
Oct 6 06:25:29 cerberus syslogd 1.4.1#17: restart.

.....missing displays....
Oct 7 06:25:47 cerberus kernel: device eth2 left promiscuous mode
Oct 7 06:25:47 cerberus kernel: device eth2 entered promiscuous mode
Oct 7 06:25:49 cerberus syslogd 1.4.1#17: restart.
Oct 7 06:37:03 cerberus -- MARK --
Oct 7 06:57:03 cerberus -- MARK --
Oct 7 07:17:02 cerberus -- MARK --
Oct 7 07:37:02 cerberus -- MARK --
Oct 7 07:57:02 cerberus -- MARK --

.....missing displays....
Oct 8 06:25:13 cerberus kernel: device eth2 left promiscuous mode
Oct 8 06:25:13 cerberus kernel: device eth2 entered promiscuous mode
Oct 8 06:25:14 cerberus syslogd 1.4.1#17: restart.
Oct 8 06:36:59 cerberus -- MARK --
Oct 8 06:56:59 cerberus -- MARK --
Oct 8 07:16:59 cerberus -- MARK --
Oct 8 07:36:59 cerberus -- MARK --
Oct 8 07:56:59 cerberus -- MARK --


As I said, there are days when the system is not restarting, but more often it does. For example, on 6th and 8th October it didn't restart, but on 7th it did, and the messages are the same.
Any ideas?

[GameFrame]

There is obviously restart somewhere in your crons.

cat /etc/crontab

and

crontab -l

It is always between 6-7am so i am quite confident there is a reboot set somewhere in cronts, hope this helped you out.