<div class="gmail_quote">On Mon, Aug 5, 2013 at 2:20 PM, Andreas Ericsson <<a href="mailto:ae@op5.se" target="_blank">ae@op5.se</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="HOEnZb"><div class="h5">On 2013-08-03 02:27, Kaushal Shriyan wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Hi, I am running Nagios Version 3.4.4 on CentOS Linux Version 6.4. As per <a href="http://www.nagios.org/download/core/thanks?t=1375489385" target="_blank">http://www.nagios.org/download/core/thanks?t=1375489385</a> do i need to update it to 3.5.0 or upgrade to 4.x series and please help me understand the difference between 3.x and the new beta 4.x version. Any dates planned for the stable release 4.x version? </blockquote> </div></div> Nagios 4 has improved performance by a factor of 7, as well as much better interfaces for extending it further in the future. Nagios 3.5 is mainly 3.4 with bugfixes, although one such bugfix caused some internal API's to be changed incompatibly, so we had to bump the minor number for it. </blockquote></div> Hi Andreas, Any planned date to have Nagios stable version 4.x? Regards Kaushal