Strange thing happened at CentOS-5 system-config-samba
Something strange about samba at CentOS.
After all samba configurations are setup properly as PDC , have tested to join domain and user sharing and authentications, suddenly the system-config-samba has missed all the samba users as follows :

Here’s the trick.
First, you have to uninstall the system-config-samba-1.2.39-1.el5.noarch.rpm
# rpm -e system-config-samba-1.2.39-1.el5.noarch.rpm
then install system-config-samba for Fedora Core 9 , you may download here
# rpm -ivh system-config-samba-1.2.63-1.fc9.noarch.rpm –nodeps
Remember, use –nodeps parameter because the dependencies files are diffrent from CentOS.
And, you are done. You may see it at menu “Applications-System tools - Samba