[Samba] Looping auth problem

[John Goerzen]

Hello,

We have had an unusual problem start this week.  I observed smbd process
using lots of CPU time for an extended period of time.  Upon looking at
the log for that machine with debug=2, I discovered that a client PC was
looking for information on a particular user on our network over and
over.  That user is a valid user on our network.  Killing the effected
smbd process did not work; another would start up in its place.

If I'd reboot the particular client, it would be better.  However, some
other PC on the network would begin doing the exact same thing.  I have
no idea why they would go one at a time like this.  I also don't know
how they'd manage to coordinate like this -- always exactly one of them
causing the trouble.

This is putting a severe burden on our LDAP server.

Any ideas?

-- John