samba - Oct 2012 - wbinfo -g empty

Hello lists,

I have an interesting problem with my samba 3.6.8.
I cannot get a the group list with "wbinfo -g" command. The answer is
always empty.
"wbinfo -u" seems to work fine. Have anyone met same problem? Cant
figure out where I made mistake.
Thank you.
See config file below.


[global]
        workgroup = AVC
        netbios name = AVC-DC
        server string = Primary Domain Controler
        obey pam restrictions = Yes
        passwd program = /usr/bin/passwd %U
        passwd chat = *New*password* %n\n *Please*retype*new*password*
%n\n *password*successfully*updated*
        passwd chat debug = Yes
        unix password sync = Yes
        log level = 1
        syslog = 0
        log file = /var/log/samba/%m.log
        max log size = 1000
        load printers = No
        add user script = /usr/sbin/useradd -g 504 -d /dev/null -s /bin/False %U
        logon script = %U.bat
        logon path         logon drive = O:
        domain logons = Yes
        os level = 65
        preferred master = Yes
        domain master = Yes
        dns proxy = No
        wins support = Yes

        winbind enum users = Yes
        winbind enum groups = Yes
        winbind use default domain = Yes
        idmap config AVC : backend = tdb
        idmap config AVC : range =1000-99999

        recycle:exclude_dir = /tmp
        recycle:exclude = *.tmp
        recycle:versions = Yes
        recycle:touch = Yes
        recycle:keeptree = Yes
        recycle:repository = /trash/%m

        create mask = 0666
        directory mask = 0777
        veto oplock files = /*.mdb/*.MDB/*.dbf/*.DBF/
        oplocks = No
        vfs objects = recycle