Many people use nessus-update-plugins with crond, and this is a good
thing that I recommand.
However, while doing some housekeeping work on nessus.org, I saw that
some persons set their cronjobs to fetch the new plugins _every five
minutes_, thus generating a lot of traffic on nessus.org, whereas it's
not necessary.
I don't recommand running nessus-update-plugins at this speed, this is
just insane and it uses a lot of bandwidth on my side.
If you use a cronjob, you can safely set it to fetch the new plugins every
two hours, that should be more than sufficient.
Abusers have been blacklisted,
-- Renaud