samba - Aug 2007 - unable to join AD domain: Failed to parse cldap reply

I have a suse 10.2 system, that runs the latest samba version, Suse 
provides for 10.2: 3.0.23d-6
After  a long time I  had to join that system to an AD domain.
Unfortunately that did not work as expected.
net ads join  -U DE7B07K0@WW901.MYDOM.NET -d4
asks for a password, but then it fails with:
...
[2007/08/23 18:24:14, 10] libsmb/namequery.c:remove_duplicate_addrs2(431)^M
  remove_duplicate_addrs2: looking for duplicate address/port pairs^M
[2007/08/23 18:24:14, 4] libsmb/namequery.c:get_dc_list(1593)^M
  get_dc_list: returning 1 ip addresses in an ordered list^M
[2007/08/23 18:24:14, 4] libsmb/namequery.c:get_dc_list(1594)^M
  get_dc_list: 129.103.192.27:389 ^M
[2007/08/23 18:24:14, 5] libads/ldap.c:ads_try_connect(180)^M
  ads_try_connect: sending CLDAP request to 129.103.192.27 (realm: 
WW901.MYDOM.NET.   //YOUR REALM)^M
[2007/08/23 18:24:14, 1] libads/cldap.c:recv_cldap_netlogon(242)^M

  Failed to parse cldap reply^M

[2007/08/23 18:24:14, 3] libads/ldap.c:ads_try_connect(189)^M
  ads_try_connect: CLDAP request 129.103.192.27 failed.^M
[2007/08/23 18:24:14, 10] 
libsmb/conncache.c:add_failed_connection_entry(140)^M
  add_failed_connection_entry: added domain WW901.MYDOM.NET.   //YOUR 
REALM (129.103.192.27) to failed conn cache^M
[2007/08/23 18:24:14, 0] utils/net_ads.c:ads_startup_int(285)^M
  ads_connect: Eingabe-/Ausgabefehler^M
[2007/08/23 18:24:14, 2] utils/net.c:main(1032)^M
  return code = -1^M
de70171c:/etc #

The complete output with -d10 along with a tcpdump I have put at
http://www.wegener-net.de/samba

Norbert