Huh? Wha? Sorry I missed this thread this morning... Have you got any more information since then?
How are pages requested from your server -- by IP address, by domain? Is it a Web server, or on an intranet? Got any caching or security modules enabled? Have you got a software firewall running? Hardware firewall or a firewall/router?
Can you wake up the server from another workstation on your LAN, using your server's LAN IP address?
The devil's hiding in the details somewhere...
Jim