Having trawled through seemingly hundreds of howtos and tutorials, nothing seemed to work properly for me. I’m pretty sure I’ve got a very minimal and easy setup running now so I hope it’s of use to someone else.
Click AD Authentication on Linux to see the wiki page
Forget all that. Just install a newer distribution and use sssd. I’ve done this successfully on Scientific Linux 6 and Fedora 13. Follow the instructions here. The only change I made was:
chpass_provider = krb5
I still use the instructions here to set up Kerberos for Apache.
This post just made so many people in my office happy. If you setup LDAP address lookups to an Active Directory server and experience hangs when autocompleting, just change the LDAP port from 389 to 3268.