Thank you for the reply, but I was more interested in what applications configured these cron jobs and where I might change the frequency or even existance.
I am assuming that since mrtg is a webserver statistics application that is was probably set up when I initialized my apache webserver, but I can't be sure. Also, even though the mrtg cron job appears to be owned by root, it doesn't show up in roots crontab job list.
I did find the gate_news job when I ran:
but it says:
DO NOT EDIT THIS FILE - edit the master and reinstall
I investigate further as to where this master is...