Hi Guys,
You may be getting the following cron mails and wondering what is causing it.
Failed to run /usr/share/webmin/security-updates/update.pl : No such file or directory at /etc/webmin/security-updates/update.pl line 12.
It is because you must be missing the package "webmin-security-updates". Install it and that will fix the issues.
apt-get install webmin-security-updates
Give it a try!