Since others also agreed that 2.4.7 is still early enough I'd prefer to avoid another config option. But 2.4.7 should released during next two weeks for introducing this change early enough.We can make it the default and remove the config option. I'm fine either way. Currently the default is still the old hash format, but it's easy enough to remove the option.
I think we don't have too much 2.4.6 users currently and if we communicate the change clearly enough we can afford such a change. I think similar to Michael here, let's avoid the additional config setting and make the new index format the default. My reason for this is, that the option only really makes sense when using old 2.3 (and 2.4.6) databases, the options is of very low values when creating new databases, I guess. (And you would have to explicitly set it for a new database to be able to use ordered indexes).
-- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/