samba - May 2008 - wbinfo and samba domain controller

Hi,

I have two servers: server pdc and server proxy

Server pdc has samba-3.0.23c-2.el5.2.0.2 working as a domain controller.
It's
working fine and i have several machines and users in the domain.

Server proxy was joined to the domain:

# net rpc testjoin
Join to 'FAM' is OK

# wbinfo -t
checking the trust secret via RPC calls succeeded

But wbinfo -u and -g doesn't show any users/groups:

# wbinfo -u
Error looking up domain users

# wbinfo -g
BUILTIN\System Operators
BUILTIN\Replicators
BUILTIN\Guests
BUILTIN\Power Users
BUILTIN\Print Operators
BUILTIN\Administrators
BUILTIN\Account Operators
BUILTIN\Backup Operators
BUILTIN\Users

My proxy smb.conf is:

[global]
   workgroup = FAM
   server string = Proxy
   log file = /var/log/samba/%m.log
   #log level = 2
   max log size = 50
   security = domain
   password server = 192.168.0.3
   hosts allow = 127.0.0.
   interfaces = 127.0.0.1/24
   bind interfaces only = Yes

   encrypt passwords = yes
   socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
   local master = no
   os level = 22
   domain master = no
   preferred master = no
   domain logons = no
   wins support = no
   dns proxy = no
   time server = yes

   disable spoolss = yes
   dont descend = /proc,/dev,/etc,/lib,/lost+found,/initrd
   enable privileges = yes

   template shell = /bin/false
   winbind use default domain = yes
   idmap uid = 10000-20000
   idmap gid = 10000-20000
   winbind nested groups = Yes
   winbind enum users= Yes
   winbind enum groups = Yes
   use spnego = no
   #winbind separator = '\'


Does anyone know if a samba domain member can list the users from another 
samba domain controller?

Thanks for any info,
Nuno Fernandes