[Samba] what is the right way to purge samba ?

[éric le hénaff]

hello
what is the right way to purge samba ?
i did some testing and i want now to erase everything and do a fresh 
start for a production server.
my configuration is PDC with ldap.
samba 3.0.22 , openldap 2.2.23, smbldap-tools 0.8.7

should i erase everything in /var/lib/samba and /var/cache/samba ?

How to clean the ldap datas ?
can i just erase the 3 'ou=' branches and the sambaDomain branch ?

any advice appreciated.
regards