Nagios 2.4 has been released to fix some relatively minor bugs present in 2.3.1 and earlier (see the Changelog). The new release can be obtained here. Happy monitoring!

Nagios News
Nagios Update: XI 5.6.6
Nagios XI update 5.6.6 is now released! This update resolves a number of minor bugs and one security vulnerability fix. This version also includes improvements