Thread:Extension talk:LDAP Authentication/Unable to start TLS - Warning on line 577/reply (10)

Well, there's a bigger problem in play here. MediaWiki's authentication code stupidly uses the same function for user names and page titles. So, when a redlink is clicked, it will cause an LDAP lookup. I've worked around the issue for anons in r112471. Logged in users will still trigger an LDAP lookup for every redlink click, unless apc or memcache is being used for caching.

I'll try to fix this somehow in MediaWiki core in a way that's hopefully less terrible.