Client connections seem to drop

[Gurugunti, Mahesh]

I have samba v 2.2 on one of my production server, the client connections
seem to drop sometimes, these clients run overnight jobs and when this
happens there job crashes and they have to manually start it.

Below is the snippet of the log for one of such clients with problems.

###########cut-paste of log (only part of it)#########

  oplock_break: receive_smb timed out after 30 seconds.
  oplock_break failed for file emikus/Nomura_Deals/Closed Deals/ASC 97
D5/Reporting issues memo.doc (dev = 10c1770, inode = 26711).
[2002/06/25 17:25:27, 0, pid=28650, effective(14497, 5110), real(0, 0)]
smbd/oplock.c:oplock_break(859)
  oplock_break: client failure in oplock break in file
emikus/Nomura_Deals/Closed Deals/ASC 97 D5/Reporting issues memo.doc
[2002/06/25 17:25:27, 0, pid=28650, effective(14497, 5110), real(0, 0)]
smbd/reply.c:reply_lockingX(4413)
  reply_lockingX: Error : oplock break from client for fnum = 13368 and no
oplock granted on this file (emikus/Nomura_Deals/Closed Deals/ASC 97
D5/Reporting issues memo.doc).
[2002/06/25 20:43:11, 0, pid=16288, effective(14497, 5110), real(0, 0)]
smbd/nttrans.c:call_nt_transact_ioctl(1762)
  call_nt_transact_ioctl: Currently not implemented.
[2002/06/25 22:03:48, 0, pid=16288, effective(0, 0), real(0, 0)]
lib/util_sock.c:read_socket_data(478)
  read_socket_data: recv failure for 4. Error = Connection timed out


########end of cut-paste###


Any ideas or any parameters/tuning required in smb.conf file??


Thanks in advance.

Mahesh Gurugunti
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