samba - Aug 2010 - failed to set machine spn: Operations error

I have samba, winbind, kerberos installed on an ubuntu server.  I have
a windows server 2003 based domain.  when i try to execute the
following command:
net ads join -U user
I get the following error:
Failed to join domain: failed to set machine spn: Operations error

Kerberos authentication works fine and I can get the kerberos ticket
just fine. This setup was working fine earlier.  I was able to
authenticate to the windows server
This started happening when I upgraded the samba version using aptitude.

Can any one point me in the right direction as to what's happening?

Thanks,
Rajat.
www.rajatswarup.com

On Mon, Aug 30, 2010 at 7:21 PM, rajat swarup <rajats at gmail.com>
wrote:
> I have samba, winbind, kerberos installed on an ubuntu server. ?I have
> a windows server 2003 based domain. ?when i try to execute the
> following command:
> net ads join -U user
> I get the following error:
> Failed to join domain: failed to set machine spn: Operations error
>
> Kerberos authentication works fine and I can get the kerberos ticket
> just fine. This setup was working fine earlier. ?I was able to
> authenticate to the windows server
> This started happening when I upgraded the samba version using aptitude.
>
Also I get the following error when I restart the samba daemon
(/etc/init.d/samba4 start)
Unknown enumerated value 'ads' for 'security'

Any ideas?
-- 
Rajat Swarup
www.rajatswarup.com