OpenLDAP 2.4.11 is now considered the most "stable" release
of OpenLDAP Software available:
http://www.openldap.org/software/download/
The OPENLDAP_STABLE cvs(1) tag has been moved forward
to OPENLDAP_REL_ENG_2_4_11:
http://www.openldap.org/software/repo.html
For definitions of "stable" and "release" versions of OpenLDAP
Software, please see the FAQ:
http://www.openldap.org/faq/?file=225
Users of prior "release" and "stable" versions of OpenLDAP
Software are strongly encouraged to upgrade.
-- The OpenLDAP Project