[Samba] Problems across a vpn

[Beitler, David]

We are running a "C" app on a Linux 2.4.31 box that accesses some mounted Windows 2000 drives.  Everything worked fine while the Linux and Windows servers were located on the same subnet, and in the same physical area.

We recently moved the Windows server to another location some forty miles away, and are connecting to it through a VPN connection over the Internet.

Since moving it, the "C" app has become unstable, and will periodically have one of its processes die without saying why.  The only thing I notice is that when the remaining processes are killed, in both /var/log/messages and /var/log/syslog I see the following.

/var/log/messages
Mar  6 20:59:04 ou-one kernel: smb_get_length: recv error = 512
Mar  6 20:59:04 ou-one kernel: smb_request: result -512, setting invalid
Mar  6 20:59:04 ou-one kernel: smb_retry: caught signal
Mar  6 20:59:04 ou-one last message repeated 4 times

/var/log/syslog
Mar  6 20:59:04 ou-one mount.smbfs[10144]:   tdb(/var/cache/samba/gencache.tdb): tdb_lock failed on list 99 ltype=0 (Bad file descriptor) 
Mar  6 20:59:04 ou-one mount.smbfs[10144]: [2006/03/06 20:59:04, 0] tdb/tdbutil.c:tdb_log(767) 
Mar  6 20:59:04 ou-one mount.smbfs[10144]:   tdb(/var/cache/samba/gencache.tdb): tdb_lock failed on list 99 ltype=1 (Bad file descriptor) 
Mar  6 20:59:04 ou-one mount.smbfs[10144]: [2006/03/06 20:59:04, 0] tdb/tdbutil.c:tdb_log(767) 
Mar  6 20:59:04 ou-one mount.smbfs[10144]:   tdb(/var/cache/samba/gencache.tdb): tdb_lock failed on list 99 ltype=1 (Bad file descriptor) 

We are using the samba that came with Slackware 10.2, samba-3.0.20-i486-2.

Any thoughts?
  
David Beitler
Network Systems Engineer
Telisimo International (www.Telisimo.com)
9370 Chesapeake Dr.
San Diego, CA 92123
(858)654-9000 x2103
dbeitler at telisimo.com