i have dhcp server in network and all client have gotten
ip,dns,wis,subnetmask and ... from it ,but i always have this error on event
viewer Source Event Log Event ID Event Type
     mrxsmb System 8003 Error

microsoft say it is because of The subnet mask of the Windows 2000 client
computer is incorrect or is different from the primary domain controller.
The client computer has attempted to promote itself to the master browser of
the subnet and has failed because only one computer in a domain can be
running as the master browser.
but the subnetmask in client and sever is the same .