yum install http://mirror.de-labrusse.fr/Sme-Server/smeserver-subversion/smeserver-subversion-1.7-3.el6.sme.noarch.rpm --enablerepo=smecontribs
signal-event post-upgrade; signal-event reboot
tested on a 64 bit, I have forgotten that the path to pwauth is different between sme8 and sme9, keep me in touch