I'm running Nagios 3.4.1 on RHEL6. I have an issue where I have a poller (service check) that is running too often and I am not sure why. I have "service_check_timeout=180" because I had trouble with the poller running long. Relevant settings for the service check: check_period 24x7 max_check_attempts 1 normal_check_interval 5 retry_check_interval 5 I also set up a tracking logger in the poller to record "timestamp PID started by PPID : Poll [Start|End] of poller" <div>2012-12-12_12:26:38 19448 started by 19442 : Poll Start of poller 2012-12-12_12:27:13 19448 started by 19442 : Poll End of poller 2012-12-12_12:28:14 19931 started by 19930 : Poll Start of poller 2012-12-12_12:30:14 19931 started by 19930 : Poll End of poller 2012-12-12_12:31:37 20467 started by 20460 : Poll Start of poller 2012-12-12_12:33:15 20949 started by 20946 : Poll Start of poller 2012-12-12_12:33:15 20467 started by 20460 : Poll End of poller 2012-12-12_12:33:41 20949 started by 20946 : Poll End of poller 2012-12-12_12:36:38 21483 started by 21478 : Poll Start of poller 2012-12-12_12:38:14 21971 started by 21964 : Poll Start of poller 2012-12-12_12:39:17 21483 started by 21478 : Poll End of poller 2012-12-12_12:39:18 21971 started by 21964 : Poll End of poller 2012-12-12_12:41:38 22500 started by 22492 : Poll Start of poller 2012-12-12_12:42:19 22500 started by 22492 : Poll End of poller 2012-12-12_12:43:14 23003 started by 22999 : Poll Start of poller 2012-12-12_12:45:20 23003 started by 22999 : Poll End of poller 2012-12-12_12:46:37 23540 started by 23535 : Poll Start of poller 2012-12-12_12:48:14 24025 started by 24024 : Poll Start of poller 2012-12-12_12:48:20 23540 started by 23535 : Poll End of poller 2012-12-12_12:48:41 24025 started by 24024 : Poll End of poller 2012-12-12_12:51:38 24558 started by 24554 : Poll Start of poller 2012-12-12_12:53:14 25044 started by 25041 : Poll Start of poller 2012-12-12_12:54:35 25044 started by 25041 : Poll End of poller As you can see, I start to get overlapping pollers. I don't understand why this would happen. Any hints or clues? </div>