server hanged per hour

[David Timms]

Rilawich Ango wrote:
> Recently, I find that the server FC8 installed is very unstable.  It
> always restart itself per every hour.   Below is the message.  From
> internal, some ppl say it is a kernel bug.  I am not quite sure.
> Anyone can tell me what the problem is?
> 
> 
> Jun 11 22:38:41 risegame ntpd[1711]: kernel time sync status change 0001
> Jun 11 23:33:08 risegame rsyslogd: [origin software="rsyslogd"
> swVersion="1.19.10" x-pid="1622"][x-configInfo udpReception="No"
> udpPort="514" tcpReception="No" tcpPort="0"] restart
> 
> Jun 11 23:42:15 risegame ntpd[1695]: synchronized to 210.0.235.14, stratum 2
> Jun 12 00:33:27 risegame rsyslogd: [origin software="rsyslogd"
> swVersion="1.19.10" x-pid="1640"][x-configInfo udpReception="No"
> udpPort="514" tcpReception="No" tcpPort="0"] restart
> Jun 12 00:33:27 risegame kernel: rklogd 1.19.10, log source =
> /proc/kmsg started.
> 

Those logs are only enough to show that the syslogd is restarting; is it 
then followed with the normal kernel boot process ?
What is it proceeded by ?
What kernel are you running ? {uname -a}
What is in /etc/cron.hourly/ ?