wikitech takes a lot of time to serve pages, and after logging out, trying to log in again gives: "Login error
Incorrect password entered. Please try again." after probably more than a minute of waiting. (And I'm *very* sure that I use the correct password :-).)
This feels like some barrier between wikitech and the LDAP backend. Logging into Labs instances works fine, so the LDAP server seems to be up and running.