IMPORTANT!

Since nagios-plugins-1.4.11-4mdv2008.1 *ALL* check_* modules has been split into
own sub packages. This means the older configuration file located here:
/etc/nagios/plugins.d/nagios-plugins.cfg is not valid anymore. The file has 
been renamed to /etc/nagios/plugins.d/nagios-plugins.cfg_do_not_use and all 
command related configuration per plugin has been put in the related plugin sub
package, for example the nagios-check_apt package contains only this:

/etc/nagios/plugins.d/check_apt.cfg
/usr/lib/nagios/plugins/check_apt