I'm following the instructions on this URL http://wiki.centos.org/HowTos/RT_3.4.x_On_CentOS_4.x and came across the part that said "WARNING: RT overwrites some packages from the base distribution, especially mod_perl" How exactly do I "protect" the RT repository? It links to the "ProtectBase" program http://wiki.centos.org/PackageManagement/Yum/ProtectBase ...but what do I mod to protect this RT repository?