Error with Domain Logons

[Cabler, Adam W]

I get this error when trying to start samba as a PDC.  Samba starts fine
otherwise, but when I set Security = Domain, samba will not start.
 
[1999/03/23 15:23:13, 1] smbd/files.c:file_init(219)
  file_init: Information only: requested 10000 open files, 2490 are
available.
[1999/03/23 15:23:13, 0] libsmb/clientgen.c:cli_connect_serverlist(2845)
  cli_connect_serverlist: Domain password server not available.
[1999/03/23 15:23:13, 0] lib/sids.c:get_domain_sids(199)
  get_member_domain_sid: unable to initialise client connection.
[1999/03/23 15:23:13, 0] smbd/server.c:main(676)
  ERROR: Samba cannot obtain PDC SID from PDC(s)