[Samba] Problems with 2003 Server and Samba 3.0.1

[Michael Keightley]

We have a Windows 2003 server that is a member of a Samba 2.2.8a domain.  We
can browse to this Samba server through "My Network Places" and map a drive
to a share on this server.  We also have a number of Samba 3.0.1 servers
(running Solaris 8 and Red Hat 7.0).
These are member servers of the Samba 2.2.8a domain.  Using "My Network
Places" on the Windows 2003 server, double clicking on one of these 3.0
Samba servers displays the following message: 

"\\server is not accessible. You might not have permission to use this
network resource.  Contact the administrator of this server to find out if
you have access permissions. 

The request is not supported."

The Windows 2003 server can also not map a drive to any Samba 3.0.1 shares.
Windows 2000 Server and Windows XP machines can browse to the Samba 3.0.1
servers and map drives.
These Samba servers were recently upgraded from Samba 2.2.8a to Samba 3.0.1.
There were no browsing or mapping problems on Windows 2003 server when the
samba servers were running 2.2.8a.
It doesn't seem to matter if the Windows 2003 server is a member of the
Samba 2.2.8a domain or not, the problem remains the same.

What do I have to do to map drives from 2003 to Samba 3.0.1?

Below is the smb.conf on our 3.0.1 server.

-------------------------

[global]
  workgroup = WALLACE
  server string = %h
  hosts allow = 192.168.191. 192.168.192. 192.168.193. 192.168.198. 127.
  log file = /var/log/samba/%m.log
  case sensitive = no
  preserve case = yes
  short preserve case = yes 
  security = server
  password server = wallace.quadstone.com
  domain master = no
  domain logons = no
  local master = yes
  preferred master = no
  wins support = no
  os level = 50
  guest account = samba
  socket options = TCP_NODELAY IPTOS_LOWDELAY SO_SNDBUF=16384 SO_RCVBUF=16384

[homes]
  comment = Home Directories
  browseable = yes
  guest ok = yes
  writable = yes


-------------------------
Michael
-- 
Michael Keightley <Michael.Keightley at quadstone.com>    Tel: +44 131 240 3137
Systems Manager, Quadstone Limited,                    Fax: +44 131 220 4492
16 Chester Street, Edinburgh EH3 7RA, Scotland         http://www.quadstone.com