I am trying to use the check_zypper plugin for Nagios (http://exchange.nagios.org/directory/Plugins/Operating-Systems/Linux/check_zypper/details), however it always returns: "Updates OK: no updates available" even when there are updates available. Sometimes this message is displayed with status OK, while most of the time it is yellow with status WARNING.
I am using plugin version 1.01 with SLES 11.2