samba - Mar 2011 - "smbd/session.c:111(session_claim) Re-using invalid record" in Samba logs

Hi,
Just recently the logs of a production Samba server are being populated by
the following message:

"smbd/session.c:111(session_claim) Re-using invalid record"

Does anyone have any tips for fixing this "invalid record"?
(I believe it is related to the utmp = yes option which is set in
/etc/samba/smb.conf).

I do not believe this log message is serious, but we are experiencing domain
login problems with some Windows 7 clients and it would be good to remove
this issue, even if it not the source of the Windows 7 login problems.

Regards,

David Harrison
StressFree Solutions <http://www.stress-free.co.nz/>
linkedin.com/in/dhharrison