Comment 2 for bug 807649

Extract from log:
Paramétrage de nagios3-common (3.2.3-1ubuntu1.2) ...
 * Starting nagios3 monitoring daemon nagios3 
Nagios Core 3.2.3
Copyright (c) 2009-2010 Nagios Core Development Team and Community Contributors
Copyright (c) 1999-2009 Ethan Galstad
Last Modified: 10-03-2010
License: GPL

Website: http://www.nagios.org
Reading configuration data...
   Read main config file okay...
Processing object config file '/etc/nagios3/commands.cfg'...
Processing object config directory '/etc/nagios-plugins/config'...
Processing object config directory '/etc/nagios3/conf.d'...
Processing object config file '/etc/nagios3/conf.d/timeperiods_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/localhost_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/generic-host_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/hostgroups_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/generic-service_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/services_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/contacts_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/extinfo_nagios2.cfg'...
   Read object config files okay...

Running pre-flight check on configuration data...

Checking services...
Error: Service check command 'check_load' specified in service 'Current Load' for host 'localhost' not defined anywhere!
Error: Service check command 'check_users' specified in service 'Current Users' for host 'localhost' not defined anywhere!
Error: Service check command 'check_all_disks' specified in service 'Disk Space' for host 'localhost' not defined anywhere!
Error: Service check command 'check_http' specified in service 'HTTP' for host 'localhost' not defined anywhere!
Error: Service check command 'check_ssh' specified in service 'SSH' for host 'localhost' not defined anywhere!
Error: Service check command 'check_procs' specified in service 'Total Processes' for host 'localhost' not defined anywhere!
 Checked 6 services.
Checking hosts...
Error: Host check command 'check-host-alive' specified for host 'localhost' is not defined anywhere!
 Checked 1 hosts.
Checking host groups...
 Checked 4 host groups.
Checking service groups...
 Checked 0 service groups.
Checking contacts...
 Checked 1 contacts.
Checking contact groups...
 Checked 1 contact groups.
Checking service escalations...
 Checked 0 service escalations.
Checking service dependencies...
 Checked 0 service dependencies.
Checking host escalations...
 Checked 0 host escalations.
Checking host dependencies...
 Checked 0 host dependencies.
Checking commands...
 Checked 4 commands.
Checking time periods...
 Checked 4 time periods.
Checking for circular paths between hosts...
Checking for circular host and service dependencies...
Checking global event handlers...
Checking obsessive compulsive processor commands...
Checking misc settings...

Total Warnings: 0
Total Errors: 7

***> One or more problems was encountered while running the pre-flight check...

     Check your configuration file(s) to ensure that they contain valid
     directives and data defintions. If you are upgrading from a previous
     version of Nagios, you should be aware that some variables/definitions
     may have been removed or modified in this version. Make sure to read
     the HTML documentation regarding the config files, as well as the
     'Whats New' section to find out what has changed.

 * errors in config!