In another thread, we've isolated our SBS 2003 server's connection problems to the DHCP Client needing to be restarted. I have it set to restart every hour, though sometimes the connection fails before that. Server loses outside connection, and all work stations lose internet as a result.
DHCP is definitely off on the router.
Background: our server went out for a new power unit, I turned on DHCP on the router in the meantime, disabled it when the server came back, and we've had this problem ever since. Failing hardware? Failing NIC? Something else? I'm at a loss as to what to try next...
Any help would be appreciated!