[Samba] Clear file locks when connection dies

[Brecht Hoflack]

Hi,

we have a samba setup running samba 3.0.10-Debian with a lot of DOS pc's 
  writing to it.

Now we have a problem that when one of those pc's is restarted while 
having a lock,  that file stays locked.  We already tried changing this 
behavior by setting the following parameters without effect:

- keepalive
- SO_KEEPALIVE
- deadtime

How can we enable a timeout on these locks / connections?

Thanks in advance,

Brecht