oplock problems

[Wierzbicki, Ralf]

Hello,
I have a samba box here serving files to approximately
100 users and everything works perfectly except that
sometimes a client workstation will temporarily freeze
when accessing files and this is what shows in the logs:

Apr 27 08:42:09 smb smbd[24360]: [2000/04/27 08:42:09, 0]
smbd/oplock.c:oplock_break(976) 
Apr 27 08:42:09 smb smbd[24360]:   oplock_break: receive_smb timed out after
30 seconds. 
Apr 27 08:42:09 smb smbd[24360]:   oplock_break failed for file file.msg
(dev = 807, inode = 639182). 
Apr 27 08:42:09 smb smbd[24360]: [2000/04/27 08:42:09, 0]
smbd/oplock.c:oplock_break(1050) 
Apr 27 08:42:09 smb smbd[24360]:   oplock_break: client failure in oplock
break in file file.msg

It's a linux 2.2.14 box with samba 2.0.7.
Thanks in advance!

Regards,
Ralf