I did a fresh 4.1.2 install on June 10 and have received the same message on each of the last three days. After the fresh install, I upgraded using the patches from /pub.e-smith/updates/4.1.2/RPMS/noarch. I also added squidGuard.
I had done the patching and added squidGuard on my previous 4.1.2 install and did not get the Cron message. It seems that it is the $conf variable that is not initialized?
Jonathan