Hi, I set this limit because my server go in hang ...and I don'have any error log in /var/log/messages ... I have think that my server there are too many processes ... I have set max_concurrent_checks=0 and my server go in hanq more often... My server is a FreeBSD 7.1-RELEASE-p2 with 950 host and 4900 service, Nagios 3.0.3 Anothre problem is that sometimes nagios don't update the status and when i try to stop nagios don't dies, i try to kill -9 the process but don't dies so I have to reboot the server. Any idea ? thank you for the support bye.. <div class="gmail_quote">On Wed, Mar 25, 2009 at 2:09 PM, Ricardo Maraschini <<a href="mailto:ricardo.maraschini@opservices.com.br">ricardo.maraschini@opservices.com.br</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> ----- "Gian Paolo Buono" <<a href="mailto:gpbuono@gmail.com">gpbuono@gmail.com</a>> escreveu: <div class="im">> from nagios.log I receive this message ? > > [1237973726] Max concurrent service checks (400) has been reached. > Delaying further checks until previous checks are complete... </div>[...] <div class="im">> any idea ? I is this a problem? </div>Search by max_concurrent_checks on <a href="http://nagios.sourceforge.net/docs/3_0/configmain.html" target="_blank">http://nagios.sourceforge.net/docs/3_0/configmain.html</a> -rm </blockquote></div>