Recently set up 2 machines 1) "PDC" for authentication, home directories, profiles... and 2) "File Server" for network shares with varying permissions for different users. Both Running Samba 2.2.2 compiled from source. These are the only "servers" on the network and I have like 10 "clients" all running Win2K. PDC using shadowed password. /etc/passwd has entries for all my users and /etc/group has a few groups for some management File Server using shadowed password. /etc/passwd and /etc/group have been duplicated here without passwords or home dir's. Security= user on PDC , Security= server with Password server = {PDC IpAddress} work ok but when I switched to Security= user on PDC , Security= domain with Password server = {PDC IpAddress} nothing authenticates the win boxes get an authentication dialogue but nothing gets in Anybody have any ideas what could be wrong?