Description of problem:

vixie-cron in RHEL 3 U2 needs to be modified to add support for laus.
Short-term solution from Charlie Bennett:

[ -x /usr/sbin/aurun -a ! -x /usr/sbin/crond.nolaus ] && {
   mv /usr/sbin/crond /usr/sbin/crond.nolaus
   cat > /usr/sbin/crond <<!
#!/bin/bash
[ -x /usr/sbin/crond.nolaus ] && exec /usr/sbin/aurun
/usr/sbin/crond.nolaus "\$@"
!
   chmod +x /usr/sbin/crond
   service crond stop
   service crond start
}