[Samba] Connectivity issues

[mjb at SRINC.biz]

Samba 3.2.5

I'm running into an issue when using Vista to access Samba shares.  I'm 
able to connect intermitently and it stays connected for a brief period of 
time (under 60 seconds) before I get the following error on the Vista box:

"Network path was not found"

In syslog it shows:

[begin]
[2008/12/09 11:09:03,  2] auth/auth.c:check_ntlm_password(308)
  check_ntlm_password:  authentication for user [matt] -> [matt] -> [matt] 
succeeded

[2008/12/09 11:09:03,  1] smbd/service.c:make_connection_snum(1190)
  mpc (10.0.0.58) connect to service data initially as user matt 
(uid=1005, gid=1006) (pid 19637)

[2008/12/09 11:11:02,  0] lib/util_sock.c:read_socket_with_timeout(939)

[2008/12/09 11:11:02,  0] lib/util_sock.c:get_peer_addr_internal(1607)
  getpeername failed. Error was Transport endpoint is not connected
  read_socket_with_timeout: client 0.0.0.0 read error = Connection reset 
by peer.

[2008/12/09 11:11:02,  0] lib/util_sock.c:write_data(1059)

[2008/12/09 11:11:02,  0] lib/util_sock.c:get_peer_addr_internal(1607)
  getpeername failed. Error was Transport endpoint is not connected
  write_data: write failure in writing to client 0.0.0.0. Error Broken 
pipe

[2008/12/09 11:11:02,  0] smbd/process.c:srv_send_smb(74)
  Error writing 75 bytes to client. -1. (Transport endpoint is not 
connected)
[end]


My smb.conf is pretty straight forward.. here are the global settings:

[global]
        workgroup = <our domain>
        netbios name = NAS
        log level = 2
        log file = /var/log/samba/%U
        smb ports = 445
        local master = No
        domain master = No

This problem occures regardless of if I access the NAS by its name, or by 
IP.

Any ideas?  It seems that no matter what is in my smb.conf file, I cannot 
get Vista and Samba to live in harmony..

Thanks,
Matt