NT login problem

[Robert D. Carlitz]

On Feb. 12 Michael Hulet reported a problem with the error message

    The system can not log you on (C000005B). Please try again 
    or consult your system administrator.

Michael said that he was able to log in when he tried again.  I'm
seeing the same error message, but I'm unable to log onto the Samba
server.  I'm running 2.1.0prealpha under BSDi 3.0.  The log file
for the NT Workstation from which I'm trying to log in reports

    groupdb/groupdb.c:iterate_getusergroupsnam(232)
    unable to open group database.

which I presume to be related to the login problem and the other
remarks in Michael's message.  I'm curious what problem the error
number C000005B actually refers to and what work-arounds people
have discovered for this.  I've tried various things with group
mappings in smb.conf, but I haven't found anything that works.

Thanks,
Bob Carlitz