[Samba] String buffer error when trying to add to a domain

[bryce]

net join -d 2 -S pnicg-pdc -U Administrator
[2004/02/18 20:27:03, 0] param/loadparm.c:map_parameter(2410)
   Unknown parameter encountered: "domain admin group"
[2004/02/18 20:27:03, 0] param/loadparm.c:lp_do_parameter(3048)
   Ignoring unknown parameter "domain admin group"
[2004/02/18 20:27:03, 2] lib/interface.c:add_interface(79)
   added interface ip=172.16.24.137 bcast=172.16.25.255 nmask=255.255.254.0
[2004/02/18 20:27:03, 2] libsmb/namequery.c:name_query(484)
   Got a positive name query response from 172.16.24.15 ( 172.16.25.20 )
[2004/02/18 20:27:03, 2] lib/util_sock.c:open_socket_out(746)
   error connecting to 172.16.25.20:445 (Connection refused)
[2004/02/18 20:27:03, 0] rpc_client/cli_netlogon.c:cli_nt_setup_creds(249)
   cli_nt_setup_creds: request challenge failed
[2004/02/18 20:27:03, 1] utils/net_rpc.c:run_rpc_command(138)
   rpc command function failed! (STATUS_BUFFER_OVERFLOW)
Password:
[2004/02/18 20:27:07, 2] lib/util_sock.c:open_socket_out(746)
   error connecting to 172.16.25.20:445 (Connection refused)
[2004/02/18 20:27:10, 1] libsmb/cliconnect.c:cli_full_connection(1425)
   failed session setup with NT_STATUS_LOGON_FAILURE
[2004/02/18 20:27:10, 1] utils/net.c:connect_to_ipc(150)
   Cannot connect to server.  Error was NT_STATUS_LOGON_FAILURE
The username or password was not correct.
[2004/02/18 20:27:10, 2] utils/net.c:main(767)
   return code = 1

I have found no help on the samba IRC server( except for a very generous 
  engima offering up what little information he/she could). 
samba-technical didn't answer my about this either. Can someone here 
help me, this happens on my gentoo(stable x86) box with both 2.2.8a and 
3.0.2a. The pdc is a NT4 Terminal Server.

I am happy to provide as much information as needed to help get this 
solved. Willing to even write up a bug report( as 1 doesn't seem to 
exist yet). I just thought i would write here first to see if anyone 
might have come across this before.

Another quick question if i may, do have have to do this to the PDC, 
could i maybe get away with doing a BDC?

thanks in advance for any and all help.

bryce