[Samba] Problems joining a RHEL4.0 version of samba to an active directory

[Alex Sharaz]

Chaps,

I'm trying to join a RHEL 4.0 Linux server to an active directory
domain. The server in question runs a RADIUS server and I need it to be
able to authenticate users via AD.

Basically when we try running 

net ads join member -I 150<an ip address> -U <admin user> -d 2
we  get

[2006/02/23 10:05:20, 2] lib/interface.c:add_interface(79)
  added interface ip=150.237.47.22 bcast=150.237.47.255
nmask=255.255.255.0
[2006/02/23 10:05:20, 2] lib/interface.c:add_interface(79)
  added interface ip=127.0.0.1 bcast=127.255.255.255 nmask=255.0.0.0
testa's password: 
[2006/02/23 10:05:34, 0] utils/net_ads.c:ads_startup(186)
  ads_connect: Strong(er) authentication required
[2006/02/23 10:05:34, 2] utils/net.c:main(859)
  return code = -1


If however I try "kinit -V <myuserid>@ADIR.HULL.AC.UK" and enter my AD
password it works. If I try the same with the administrator password, it
works.

My smb.conf file looks like

[global]
   # Replace 'OPEN' with the name of your Windows domain:
   workgroup = ADIR.HULL.AC.UK
   # You may also need to specify the realm if you are using Kerberos
   security = domain
   password server = <this Server>
   realm = ADIR.HULL.AC.UK
   preferred master = no
   server string = Hull Comms support server
   security = ADS
   use spnego = yes
   encrypt passwords = yes
   log level = 3
   log file = /var/log/samba/%m
   max log size = 50
   winbind separator = +
   printcap name = cups
   printing = cups
   idmap uid = 10000-20000
   idmap gid = 10000-20000 
   bind interfaces only =yes
   interfaces =150.237.47.22 127.0.0.1

Any suggestions as to where to look for the problem would be appreciated
Alex