Windows clients are authenticated via NIS to access Unix AIX servers. I had to manually encrypt SMB user passwords to enable them to access the Unix file shares. This turned out to be a lot extra work so I started searching for another way around this problem. I came up with using password server = server_name and security = server. This allowed me to disable the smbpasswd file and access simply by redirecting authentication to the password server. I have three Samba servers and one of them is the actual NIS authentication server. In the smb.conf html help file there is a statement under password server that says "Never point a Samba server at itself for password serving. This will cause a loop and could lock up your Samba server!" Looks like I'm snookered again, is there another way to get around this? Todd