[Samba] Files loosing changes (Pipe broken error)

[Germán Bobr]

Hi, we are having some troubles at the office with the samba server.

Sometimes, when someone is working with a file in the server (I/e an
excel file) and save the changes, they doesnt save.

Excel doesnt show any error, so, i presume that client machine receives
an ok from the server.

But if you see the logs, you can find an error for each file lost:

 [2009/08/06 17:01:56, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 192.168.1.105. Error =
No existe ninguna ruta hasta el `host'
 [2009/08/06 17:01:56, 1] smbd/service.c:close_cnum(1230)
  monica (192.168.1.105) closed connection to service Recursos
Compartidos
[2009/08/06 17:01:56, 0] lib/util_sock.c:write_data(562)
  write_data: write failure in writing to client 192.168.1.105. Error
Tubería rota
[2009/08/06 17:01:56, 0] lib/util_sock.c:send_smb(761)
  Error writing 75 bytes to client. -1. (Tubería rota)
[2009/08/06 17:02:19, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 192.168.1.108. Error =
No existe ninguna ruta hasta el `host'
[2009/08/06 17:02:19, 0] lib/util_sock.c:write_data(562)
  write_data: write failure in writing to client 192.168.1.108. Error
Tubería rota
[2009/08/06 17:02:19, 0] lib/util_sock.c:send_smb(761)
  Error writing 75 bytes to client. -1. (Tubería rota)

There are not to many errors of this in the log, this is only an
ocassional issue.

>> [root at SERVER samba]# smbcontrol --version
>> Version 3.0.33-3.7.el5_3.1

Here the error strings in english:
"No existe ninguna ruta hasta el `host'" = "No route to host"
"Tubería rota = Pipe broken"

How can i prevent this errors?

Thank you!

Germán