[Samba] ACL from win2k doesn't work

[Mauro Destro - Impel Systems Srl]

  I'm trying to setup a simple standalone Samba server in a win2k 
network without domain.

I've followed some basic howto on the net, users can see shares and can 
save, modify and delete files and folders.

My big problem is the security tab: i can't add any user because the 
screen where i can see users list ask me for a password.

With an admin user and password (the same that i use to log into share) 
it tells something like "credentials supplied conflict with an existing 
set of credentials"

If I don't insert user and password it tells "access denied".

Also I can't modify existing acl.

Logs are with debug level = 3 but no error is present.

Thanks