Windows 7 Ult 64bit & ReadyNAS 1100 not connecting to shares

Hi,
I have been using the 4tb readyNAS 1100 on a domain for almost a year now flawlessly. We have over 20 workstations all Windows XP and several Windows servers from 2003-2008 all using the ReadyNAS 1100 daily. This has been and still is a great device.

I recently installed a Windows 7 ULT 64bit box on the network and have had no luck getting it to access any of the shares on the ReadyNAS device. It shows up in Network Discovery, Radiator, Frontview, http access, etc just not through cifs.
I've also added another identical Win 7 box which is experiencing the same connection issues.

I’ve spent the last 2 days searching the forums and trying all the suggestions from other posts like changing the local policy settings, trying almost all the different security/advanced options in frontview, updating the firmware to 4.1.6, all to no avail. Below is a snippet of the smdb.log file showing errors related to the Windows 7 box trying to connect and successful logs of windows xp boxes.

[2010/01/13 15:25:42, 2] auth/auth.c:check_ntlm_password(309)
  check_ntlm_password:  authentication for user [Andrew] -> [Andrew] -> [SPC\andrew] succeeded
[2010/01/13 15:31:41, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 10.0.0.131. Error = Connection reset by peer
[2010/01/13 15:34:31, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 10.0.0.131. Error = Connection reset by peer
[2010/01/13 15:46:14, 0] smbd/server.c:main(942)
  smbd version 3.0.34 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2010/01/13 15:49:46, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 10.0.0.131. Error = Connection reset by peer
[2010/01/13 15:53:41, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 10.0.0.131. Error = Connection reset by peer
[2010/01/13 15:56:16, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 10.0.0.131. Error = Connection reset by peer
[2010/01/13 15:56:33, 0] smbd/server.c:main(942)
  smbd version 3.0.34 started.
  Copyright Andrew Tridgell and the Samba Team 1992-2009
[2010/01/13 15:58:24, 2] auth/auth.c:check_ntlm_password(319)
  check_ntlm_password:  Authentication for user [Brent] -> [Brent] FAILED with error NT_STATUS_NO_SUCH_USER
[2010/01/13 15:59:21, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 10.0.0.131. Error = Connection reset by peer
[2010/01/13 16:01:01, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 10.0.0.131. Error = Connection reset by peer
[2010/01/13 16:02:21, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 10.0.0.131. Error = Connection reset by peer
[2010/01/13 16:08:46, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 10.0.0.131. Error = Connection reset by peer
[2010/01/13 16:20:39, 2] auth/auth.c:check_ntlm_password(309)
  check_ntlm_password:  authentication for user [Ronf] -> [Ronf] -> [SPC\ronf] succeeded
[2010/01/13 16:42:31, 2] auth/auth.c:check_ntlm_password(309)
  check_ntlm_password:  authentication for user [Andrew] -> [Andrew] -> [SPC\andrew] succeeded
[2010/01/13 17:00:04, 2] auth/auth.c:check_ntlm_password(309)

The support on these forums looks outstanding and I'm hopeful someone out here can help me :)

Thanks,
Brent