Over xmas, I think after a CVS update I did before leaving, LDAP authentication stopped working completely.

From the error log:

[Mon Jan 07 09:51:56 2008] [error] [client 192.168.3.44] File does not exist: E:/Moodle_webserver/moodle/login/ad, referer: https://www.mymoodle.com/login/index.php

I can't find a reference to that address in index.php, although I'm still looking. This has locked out almost all users and I really need a fix!