[Samba] Win XP logon issues

[Jeffrey D. Means]

when trying to log on to my samba server (3.0a24 with LDAP)  I get a 
message about the domain not being available or the machine account is 
not available.  In the event log this is what the Netlogon service 
reports about the error.

---
The domain of this computer, MEANSPC has been downgraded from Windows 
2000 or newer to Windows NT4 or older. The computer cannot function 
properly in this case for authentication purposes. This computer needs 
to rejoin the domain. The following error occurred:
There are currently no logon servers available to service the logon 
request.
---

Is this a issue with my Win XP Pro box or the samba server.  I have 
broken the machine from the domain and rejoined it several times trying 
to fix this issue to no avail.  I have applied the registry patch for 
win xp and am now at a loss as to what to try next.

--- smb.conf  [Global Section]
# Global parameters
[global]
        workgroup = MEANSPC
        netbios name = BAST
        server string = Authentication Server
        encrypt passwords = Yes
        update encrypted = Yes
#       obey pam restrictions = Yes
#       pam password change = Yes
        restrict anonymous = Yes
        time server = Yes
        socket options = TCP_NODELAY SO_SNDBUF=8192 SO_RCVBUF=8192
        add user script = /usr/sbin/useradd -s /bin/false -d /dev/null 
-g 509 -c "%U" -M %u;passwd -l %u
        add machine script = /usr/sbin/useradd -s /bin/false -d 
/dev/null -g 509 -c "%m Machine" '%m$';passwd -l '%m$'
#       delete user script = smbpasswd -x %u;userdel %u
        message command = cat %s>/dev/lp0
#       use spnego = no

# LDAP
        passdb backend = ldapsam:ldap://bast.picotech.net/
        ldap suffix = o=smb,dc=meanspc,dc=com
        ldap admin dn = "cn=root,o=smb,dc=meanspc,dc=com"
#       ldap machine suffix = ou=Computers
#       ldap user suffix = ou=Users
        ldap ssl = no

# Debugging
        debug pid = Yes
        debug uid = Yes
        debug timestamp = Yes
        log level = 1
        log file = /var/log/samba/samba.log
        max log size = 50
        panic action = echo 
"*******************************************************\nSamba Panic 
!!!!!\n**************$

# Logon Info
        logon script = netlogon.bat
        logon path = \\bast\profiles\%u
        logon home = \\bast\%u
        logon drive = Z:

# Become PDC
        os level = 255
        lm announce = True
        preferred master = True
        domain master = True
        domain logons = yes
        dns proxy = No
        wins proxy = Yes
        wins support = Yes
        null passwords = Yes

# Admin Stuff
        admin users = @smbadmin
        write list = @smbadmin
        map system = Yes
        map hidden = Yes
        delete readonly = Yes
        hosts allow = 192.168. localhost 127.0.0.1
        interfaces = eth0
        bind interfaces only = Yes
        large readwrite = Yes
        min protocol = LANMAN1
        fstype = NTFS
        nt acl support = yes