Hello agian, I'm experiencing right now the same problem. And I'm trying to doing some forensic. It's working in a 2 CPU system and main daemon is taking one of them. With truss I just get many many lines like this /2: poll(0xFEF79F88, 1, 500) = 1 /2: poll(0xFEF79F88, 1, 500) = 1 /2: poll(0xFEF79F88, 1, 500) = 1 /2: poll(0xFEF79F88, 1, 500) = 1 /2: poll(0xFEF79F88, 1, 500) = 1 /2: poll(0xFEF79F88, 1, 500) = 1 /2: poll(0xFEF79F88, 1, 500) = 1 /2: poll(0xFEF79F88, 1, 500) = 1 /2: poll(0xFEF79F88, 1, 500) = 1 And the only pool entry in code is in utill.c, function void * command_file_worker_thread(void *arg){ And the output (1) match this #define EPERM 1 /* Not super-user */ But although with this error it should write to nagios.log, nothing is written. I have also checked the external command file # ls -l /usr/local/nagios/var/rw/nagios.cmd prw-rw---- 1 nagios nagcmd 47675 Jul 14 09:08 /usr/local/nagios/var/rw/nagios.cmd And I've seen than this code is the same than in <a href="http://3.0.1.">3.0.1.</a> Any idea? Trying to stop nagios (/etc/init.d/nagios stop) I can't. I just get Warning - nagios did not exit in a timely manner And 3 nagios processes are still running. So I had to "kill -9" them Thanks a lot Jose Luis <div class="gmail_quote">2008/7/11 Jose Luis Garcia <<a href="mailto:garciam@teleline.es">garciam@teleline.es</a>>: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="gmail_quote"> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hello, My name is Jose Luis and I'm wrinting from Spain. I have recently installed Nagios in a Solaris 9 box. While I was in version 3.0.1, 1 month or so, everything has been working smoothly, but now, with version 3.0.3 Nagios has "hanged" twice (once a week more or less). Nagios daemon is running but neither checks are performed nor external commands processed. So I have to restart it. Anyone else have experienced this behaviour? Any suggestions? We are thinking of setting up a cron check to detect this situation (no entries in nagios.log), but perhaps we are experiencing some kind of bug that should be solved in new releases. Thank you very much indded Jose Luis </blockquote></div> </blockquote></div>