Nagios Event Log - WARNINGS

Hi,
I have tons of warning like this, ping is flapping, etc.
See my last hour Event Log below.
Please tell me what could be wrong with my new installation.
thanks a lot!

Thierry


[03-27-2009 14:19:07] Warning: The check of service ‘SSH’ on host ‘localhost’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:19:07] Warning: The check of service ‘Root Partition’ on host ‘localhost’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:18:08] Warning: Check result queue contained results for service ‘HTTP’ on host ‘xxx.xxx.xxx.xxx’, but the service could not be found! Perhaps you forgot to define the service in your config files?
Informational Message[03-27-2009 14:18:07] Warning: The check of service ‘HTTP’ on host ‘xxx.xxx.xxx.xxx’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:14:08] Warning: Check result queue contained results for host ‘xxx.xxx.xxx.xxx’, but the host could not be found! Perhaps you forgot to define the host in your config files?
Informational Message[03-27-2009 14:14:07] Warning: The check of host ‘xxx.xxx.xxx.xxx’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the host…
Informational Message[03-27-2009 14:11:07] Warning: The check of service ‘PING’ on host ‘localhost’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:09:15] Warning: Check result queue contained results for service ‘PING’ on host ‘xxx.xxx.xxx.xxx’, but the service could not be found! Perhaps you forgot to define the service in your config files?
Informational Message[03-27-2009 14:09:07] Warning: The check of service ‘PING’ on host ‘xxx.xxx.xxx.xxx’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:08:08] Warning: The check of service ‘Swap Usage’ on host ‘localhost’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:08:08] Warning: The check of service ‘HTTP’ on host ‘localhost’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:08:07] Warning: The check of service ‘HTTP’ on host ‘localhost’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:07:08] Warning: The check of service ‘SSH’ on host ‘localhost’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:07:08] Warning: The check of service ‘Root Partition’ on host ‘localhost’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:06:08] Warning: Check result queue contained results for service ‘HTTP’ on host ‘xxx.xxx.xxx.xxx’, but the service could not be found! Perhaps you forgot to define the service in your config files?
Informational Message[03-27-2009 14:06:07] Warning: The check of service ‘HTTP’ on host ‘xxx.xxx.xxx.xxx’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the service…
Informational Message[03-27-2009 14:03:08] Warning: Check result queue contained results for host ‘xxx.xxx.xxx.xxx’, but the host could not be found! Perhaps you forgot to define the host in your config files?
Informational Message[03-27-2009 14:03:08] Auto-save of retention data completed successfully.
Informational Message[03-27-2009 14:03:07] Warning: The check of host ‘xxx.xxx.xxx.xxx’ looks like it was orphaned (results never came back). I’m scheduling an immediate check of the host…