Hi, I'm facing nearly the same problem here, using nagios 3.0.1, ndoutils 1.4b7 and MySQL 5.0.22 running on RHEL5.1. as soon as i enable the NDO module in nagios.cfg, the service and host latencies are increasing (values about 700 sec and above...) after disabling NDO and restarting everything is normal again... at the moment there are only 90 host and 280 service checks. any help would be appreciated! <tt> I've reported a problem with NDO, in which the latency would start to go up and the nagios process consume a lot of memory, when using NDO. Because of this I started to develop my own broker to write just some data to the database, and after 3 days, the same thing started to happen, the latency started to go up, the load with it until suddenly the load dropped to zero and it seems like nagios stops processing checks and by the time it does that, it is consuming a lot of memory. I am using nagios-3.0 on CentOS 5 and I've checked and recked my broker and I can't find where it would have any allocation problems. I am running nagios with 150 hosts and 2500 services. A nagios restart fixes the latency back to where is was, 0.3s, and then it starts going up again. Is there a known problem in the nagios broker schema? Any tests I could run to try and spot the problem? Thanks --- Alessandro Ren OpServices </tt><a href=http://www.opservices.com.br/ target=_top><tt>http://www.opservices.com.br</tt></a>