sturm :
Are all systems on the same network, not running a dhcp server on both servers.
Any other switches, routers, etc in the network?
yup all workstations on the same network , one network, one server , one dhcp.
there is router which is on a seperate lan ... server has two nic's . one that connects to the internet router then to ISP then the 2nd NIC connects to one of these two switches and feeds everything.
p.s. DHCP is disabled on the router not to conflict with the DHCP running on the windows 2003 server and they are on different network subnets anyways.
ex. 192.168.1.254 ( for router -> NIC #1 )
ex 10.10.1.1 ( for local network switches >- NIC # 2)