Nagios.lock but nagios is not running

[David.Andrew at development.tas.gov.au]

My install of nagios has recently decided to say that 
        "It appears as though Nagios is not running, so commands are 
temporarily unavailable... "

However Nagios is running and performing its checks, and the nagios.lock 
file is there with a valid PID 

Any ideas where I should look?

It is running on RedHat ES 3 update 3

Here is the results of a nagios -s 

SERVICE SCHEDULING INFORMATION
        -------------------------------
        Total services:             142
        Total hosts:                64

        Command check interval:     15 sec
        Check reaper interval:      10 sec

        Inter-check delay method:   SMART
        Average check interval:     300.000 sec
        Inter-check delay:          2.113 sec

        Interleave factor method:   SMART
        Average services per host:  2.219
        Service interleave factor:  3


Any Ideas ?

David Andrew

IT Services

Dept. Economic Development


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