[Samba] Odd printing issue

[Tom Ryan]

Over the last few days, our users have started experiencing delays in
printing.

In the log files (for the client), we now see

[2011/01/05 11:12:34.360166,  1]
libsmb/cliconnect.c:2216(cli_start_connection)
  cli_start_connection: failed to connect to MACHINENAME<20>
(::ffff:IPADDRESS). Error NT_STATUS_UNSUCCESSFUL

As new systems are affected, these errors appear. We get about 7 of them
(every 10 seconds) and then the print job completes.

Suggestions? Thoughts?

Tom