samba - Sep 2002 - Error joining windows 2000 to Samba 3.0alpha19 domain

I am using ldap backend, users and machine accounts
are being added correctly. Authentication while
accessing shares works fine. The problem occurs when I
try to join this domain. I created the machine account
on unix and in ldap for samba. When trying to join the
domain from win2k client machine the following error
is recieved.

"The following error occured attempting to joing
domain "head": The parameter is incorrect."

smb.conf contains the following lines relating domain
controller activity

workgroup = head
security = user
domain logons = yes
password server = *
passdb backend = ldapsam:ldap://my_ldap_server_ip
use spnego = No
domain master = yes
local master = yes
wins support = yes
os level = 64

ldap suffix = dc=head,dc=com
ldap machine suffix = ou=Computers
ldap user suffix = ou=Users
ldap admin dn = "cn=Manager,dc=head,dc=com"
ldap ssl = no

[netlogon]
path=/usr/local/samba/lib
read only = yes
write list = ntadmin



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