Having discussed this offline with some people the following is my suggestion to move this forward.
Samba can integrate with a private copy of the Mozilla 6 LDAP for Solaris 10 U9 onwards. Until such time as there as an active project team and a stated direction (hopefully an ARC inception review) for updating the the current libldap.so in OpenSolaris Samba can carry a private copy of the Mozilla 6 LDAP there as well. This is on the assumption that the Samba project team will work with any future LDAP project team for OpenSolaris to ensure that the needs of Samba are considered in changing the system libldap. While this is less than ideal given the desire to quickly get an updated Samba into Solaris 10 U9, where there is no in kernel CIFS server, I think this is the best that this project team can be expected to do. -- Darren J Moffat