samba - Nov 2004 - 3.0.7 server "NetBIOS over TCP disabled -- no workgroup available"

win2k/XP clients can access this fine, but not NT clients.

Samba is listening on the netbios-dgm/ns ports and there's no packet 
filtering:

udp4       0      0  atarashii.netbios-dgm  *.*                   
udp4       0      0  atarashii.netbios-ns   *.*                   
udp4       0      0  *.netbios-dgm          *.*                   
udp4       0      0  *.netbios-ns           *.*                   

What do I need to check?

Thanks,
Graham

gdunn@shizuka ~ % smbclient -L 
atarashii                                      ~
Password:
Anonymous login successful
Domain=[DEV] OS=[Unix] Server=[Samba 3.0.7]

        Sharename       Type      Comment
        ---------       ----      -------
        public          Disk      Archive
        IPC$            IPC       IPC Service (Samba File Server 3.0.7)
        ADMIN$          IPC       IPC Service (Samba File Server 3.0.7)
Error connecting to 10.0.0.27 (Invalid argument)
Connection to atarashii failed
NetBIOS over TCP disabled -- no workgroup available


smb.conf

# Global parameters
[global]
	workgroup = DEV
	realm = INSCRIBER.LOCAL
	server string = Samba File Server %v
	interfaces = fxp0
	security = ADS
	passdb backend = ldapsam:ldap://omega.inscriber.local
	socket options = TCP_NODELAY IPTOS_LOWDELAY SO_KEEPALIVE SO_SNDBUF=8192
SO_RCVBUF=8192
	wins server = 10.0.0.25
	ldap admin dn = cn=Administrator,cn=users,DC=inscriber,DC=local
	ldap suffix = DC=inscriber,DC=local
	idmap uid = 10000-20000
	idmap gid = 10000-20000
	winbind separator = .
	winbind use default domain = Yes
	force create mode = 0664
	force directory mode = 0775
	dos filemode = Yes

[public]
	comment = Archive
	path = /mnt/test/public
	read only = No

[homes]
	comment = Home Directories
	read only = No
	browseable = No