[Samba] I'm confused. What is winbindd supposed to get me?

[trogl at shaw.ca]

I've got a Samba member server as part of a Windows NT domain.  User accounts have the same name in both domain.  I was having all sorts of trouble when winbindd was running with wierd groups showing up.

I happened to screw up the winbindd configuration without noticing causing it to crash, but I ran snmd and nmbd anyway and suddenly everything started working perfectly.

The docs say you MUST run winbindd.

I'm confused.