samba - Sep 2003 - 'We dont' find this rid' error - can't join a domain

I'm using Samba 2.2.8a on Red Hat 8.

I was able to set up Samba running as a PDC and have my Windows 2000
client join the domain and authenticate users, map home drives, etc,
without any problems.

I've now set up Samba to work with LDAP.  If I login to W2K locally I'm
able to map drives, browse, etc from my ldap enable Samba server without
any problems.  The log on my LDAP Directory (Sun ONE Directory Server
5.1) shows authentications working fine.  If I attach to Samba with
smbclient from another Unix machine, I'm able to log in fine.

When trying to get Windows 2000 to join the domain, I enter the root
password when prompted, but then get an error back from Windows which
says 'The specified user does not exist'.

My Samba log has the following -

[2003/09/18 14:13:10, 0] passdb/pdb_ldap.c:ldap_connect_system(316)
  ldap_connect_system: Binding to ldap server as "cn=Directory
Manager"
[2003/09/18 14:13:10, 0] passdb/pdb_ldap.c:pdb_getsampwrid(988)
  We don't find this rid [2012] count=0

Root's rid is 2006, uid and gid set to 0 as per various howtos I've
found.

According to my directory logs Samba is searching for rid 2012 and isn't
finding it. 

[18/Sep/2003:14:09:43 +0400] conn=979 op=0 RESULT err=0 tag=97
nentries=0 etime=0 dn="cn=directory manager"
[18/Sep/2003:14:09:43 +0400] conn=979 op=1 SRCH
base="dc=iforce,dc=tech-access,dc=com" scope=2
filter="(rid=2012)"
attrs="uid rid cn lmPassword ntPassword pwdLastSet logonTime logofftime
kickoffTime pwdCanChange pwdMustChange acctFlags displayName smbHome
homeDrive scriptPath profilePath description userWorkstations
primaryGroupID domain"
[18/Sep/2003:14:09:43 +0400] conn=979 op=1 RESULT err=0 tag=101
nentries=0 etime=0
[18/Sep/2003:14:09:43 +0400] conn=979 op=2 UNBIND
[18/Sep/2003:14:09:43 +0400] conn=979 op=2 fd=50 closed - U1
[18/Sep/2003:14:12:59 +0400] conn=980 fd=45 slot=45 connection from
192.168.2.4 to 192.168.2.55
[18/Sep/2003:14:12:59 +0400] conn=980 op=0 SRCH
base="dc=iforce,dc=tech-access,dc=com" scope=2
filter="(uid=windoze$)"
attrs=ALL
[18/Sep/2003:14:12:59 +0400] conn=980 op=0 RESULT err=0 tag=101
nentries=1 etime=0
[18/Sep/2003:14:12:59 +0400] conn=980 op=1 UNBIND
[18/Sep/2003:14:12:59 +0400] conn=980 op=1 fd=45 closed - U1

I've searched all over the web, but can't find an answer to this. 
I'm
90% of the way to getting Samba to work with Sun ONE Directory, but this
is driving me mad!

Thanks

Chris