Hi all, in my previous message (about usermanager not working, showing "the specified local group does not exist") I wrote that "net groupmap list" showed all the group mappings. well.. almost all, there is one group which doesn't have a groupmapping: net groupmap list | tail: IZ ICT (S-1-5-21-2651798370-710026074-3531216960-3179) -> IZ ICT IZ PZ (S-1-5-21-2651798370-710026074-3531216960-3181) -> IZ PZ Users (S-1-5-32-545) -> 10004 When I look in the ldap database, I see that the group Users is there, but with dn: sambaSID=S-1-5-32-545,ou=Groups... All the other groups have cn=Groupname in their dn. And now for the strange thing, when I delete the group "Users" form ldap, it is automatically re-created, and adding a group "Users" in the normal way, with groupmapping doesn't prevent it from being created. Which proces creates this group? And why, how? when? Does this cause the nt4 usermanager problem? Cheers, Jeroen.