samba - Jan 2014 - Samba 3 to Samba 4

Hello,

I would like to connect a winbind samba 3 client to a samba 4 domain
server.  I run net rpc info -U administrator to register to the domain.
wbinfo -m displays the server. But when I run wbinfo -u, the users are not
being displayed.  I don't understand why. Can anybody help me. Thanks.

Here's my smb.conf for the samba 3 client:

[global]
   workgroup = AIIAS.SAMBA4
   server string = %h server
    wins server = 172.16.0.242
   dns proxy = no
   password server = 172.16.0.242
   log file = /var/log/samba/log.%m
   log level = 3
   max log size = 1000
   syslog = 3
   panic action = /usr/share/samba/panic-action %d
   security = domain
   encrypt passwords = true
   passdb backend = tdbsam
   obey pam restrictions = yes
   invalid users = root
   passwd program = /usr/bin/passwd %u
   passwd chat = *Enter\snew\sUNIX\spassword:* %n\n
*Retype\snew\sUNIX\spassword:* %n\n *password\supdated\ssuccessfully* .
   socket options = TCP_NODELAY
        winbind uid = 15000-30000
        winbind gid = 15000-30000
        winbind enum users = yes
        winbind enum groups = yes
        winbind use default domain = true
        template homedir = /home/%U
        template shell = /bin/bash
        winbind offline logon = true
        winbind  cache time = 100
[homes]
   comment = Home Directories
   browseable = no
   writable = no
   create mask = 0700
   directory mask = 0700
   valid users = %S
[printers]
   comment = All Printers
   browseable = no
   path = /var/spool/samba
   printable = yes
   public = no
   writable = no
   create mode = 0700
[print$]
   comment = Printer Drivers
   path = /var/lib/samba/printers
   browseable = yes
   read only = yes
   guest ok = no

Thanks again.

Shem Pasamba