Server uptime is showing 0hr but server not rebooted

view story

http://www.unix.com – Hi One of our server is showing the uptime 0hr 5mints there is no log in /var/log/messages there is no log in command "last" kernel version is 2.4.9 (RH2.1 AS) What could be the reason for this. is this issue is related to uptime counter reached max how to verify this. Best Regards KVK (HowTos)