I have a network of several computers all running XP Pro and an HP Laserjet 4200 printer connected to the network by a wired Hawking print server. 99% of the time the printer works just fine, but every few days it just stops printing the jobs I send it. When it's working fine, I see a "Ready" message displayed, but when the printer gets in this weird mode and won't print, I see a "Data Received" message on the printer. To get past it, I usually just unplug the print server, wait for a few seconds, and plug it back in. Any ideas what could be causing this?