Just thought I'd share this great resource on configuring Unix and Samba
to authenticate against LDAP. This is cool because you can have a single
server (and an array of backup servers) provide a single network logon
for an entire network across Unix and Windows.

http://www.idealx.org/prj/samba/smbldap-howto.en.html

Oh, and don't buy the Samba-3 Official How-To book. It's certifiably
horrible.