python-ldap and kerberos

Hi everybody,

I'm on an M$AD and I'm trying python-ldap from a LINUX host with Python 2.6.4.
All is ok, I can search_s after a bind_s.
The problem is the plain text password (wireshark)...
LDAPs is not not avaible and I can't play with certificats...
Kerberos is nativelly available on M$AD and is ok on the LINUX host
(heimdal ~ kinit ok and klist ok)...
I search (Google) and try for ldap.sasl.gssapi but it is always ko :-(
Can anybody help me ?

Thanks