No output! errors

[White, Chad (MED)]

Hi all, I hope someone can help me with this problem that is absolutely 
driving me crazy.

I have just installed Nagios 1.0 and I am attempting to get it 
configured.  Everything that I am monitoring right now are Solaris 8 
SPARC machines.  I've read all the documentation and have everything 
compiled, installed and running.  At first I was very happy with Nagios 
compared to Big Brother which is what we are using right now.  However 
I have been fighting with this problem for 2 days now and I am no 
closer to figuring out the problem.

What happens is that a number of my service checks will act 
appropriately 50% of the time, and 50% of the time return (No output!). 
  What does (No output!) mean exactly?  It doesn't seem to be the same 
as when the plugins time out, which I have seen a few times as well..

Any ideas on what could be causing this?  Any kind of plugin I run 
gives me this problem eventually, even ones that just check things on 
the local monitoring services (like check_local_procs).  Due to the 
sporadic nature, it feels like some kind of a resource limitation but I 
am only monitoring around 25 services.

Any help would be appreciated at this point!
thx,

--Chad White


Here are some relevant pieces of my config:
#hq-service template
define service{
         name                            hq-service      ;
         active_checks_enabled           1
         passive_checks_enabled          1
         parallelize_check               1
         obsess_over_service             1
         check_freshness                 0
         notifications_enabled           1
         event_handler_enabled           1
         flap_detection_enabled          1
         process_perf_data               1
         retain_status_information       1
         retain_nonstatus_information    1
         check_period                    24x7
         normal_check_interval           30
         max_check_attempts              10
         retry_check_interval            1
         notification_interval           120
         notification_period             24x7
         notification_options            w,u,c,r
         register                        0
         }
# router1 ping service definition
define service{
         use                             hq-service

         host_name                       router1
         service_description             PING
         is_volatile                     0
         check_period                    24x7
         max_check_attempts              3
         normal_check_interval           5
         retry_check_interval            1
         check_command                   check_ping!100.0,20%!500.0,60%
         }

# 'router1' host definition
define host{
         use                     generic-host

         host_name               router1
         alias                   Router #1
         address                 x.x.x.x
         check_command           check-host-alive
         max_check_attempts      20
         notification_interval   60
         notification_period     24x7
         notification_options    d,u,r
         }

# 'check_ping' command definition
define command{
         command_name    check_ping
         command_line    $USER1$/check_ping -H $HOSTADDRESS$ -w $ARG1$ 
-c $ARG2$ -p 5
         }


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