[CentOS] Samba 3.5.4 net map group list doesn´t work

Tue Jul 19 13:55:08 UTC 2011
Francisco Arencibia Quesada <arencibia.francisco at gmail.com>

Good morning to everybody, I´m using centos 5.6 with samba 3.5.4, I´m
having troubles mapping groups in samba, I write net groupmap list,
and It doesn´t show any groups, nothing,  This is driving me crazy,
please if somebody can give me a hand with this, I will be thankful
forever.!!!
Best Regards
Francisco.