I have been working with nagios for two years. I monitor about 550 hosts and 700 services. Nagios works OK, but occasionaly, some service checks for some hosts remaining in queue with old "next check" time and are in first positions in queue. Other checks normaly works, but as time passes, there are more and more "old services in queue". Someting is wrong? I have upgraded nagios to newest version, 7.2.2006 (v2.0). max-concurent-checks I had 20, but now 30, and same problem. Has someone some idea what could be the problem?
Thanks very much.