I recently experienced something similar. The reason for it is that the plugin option to discard old data was disabled, and my servicechecks table grew to a size that MySQL didn't like. If you can't insert a record in that table from PHPMyAdmin (or the command line), that may be your problem. Good luck! <div class="gmail_quote">On Mon, Jun 2, 2008 at 9:11 AM, Marcin Praczko <<a href="mailto:marcin@2fluid.co.uk">marcin@2fluid.co.uk</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hi I've configured Nagios 2.6 with NDOUtils so time ago. And everything was working well till today. About 4'oclock from some reason Nagios stopped writing data to database. When I am running Nagios without ndoutils (no changes on event broken). Nagios is working well. When I switch ndoutils on, nagios seems be starting like normal. But I can't get any details over WWW - have the same error like Nagios is not running. And Nagios doesn't make any tests any more. It is just waiting for something. Database is working well, I configured ndoutils for debugging everything, and is not working - nothing is appear in ndoutils log file. In Nagios log files have details that all is OK. Did you have similar problem? Marcin Praczko No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.24.4/1477 - Release Date: 01/06/2008 17:28 ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. <a href="http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/" target="_blank">http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div>