samba - Dec 2002 - MS Word / office hangs from Win2K workstations when using samba s hare

I am using samba-2.2.7

ALL OPLOCKS are turned off.

Yet, 
when using a Win2K workstations ,
and editing a word document,
sometimes word hangs.
No crash.
No special log messages.
Simply - word hangs.

I saw a similar message in the archives:
http://marc.theaimsgroup.com/?l=samba&m=102543430800530&w=2
the suggestion there is to install a microsoft patch in the Win2K clients.

Has anyone of you installed that microsoft's patch to Win2K ? did it help ?

Thanks,
Nir