Gutsy : Install Nagios2 via apt : any success ?

[Philippe Didier]

(Ubuntu Gutsy - Mysql5 running / Apache2 running)

Hi,

I try to install nagios2 via Synaptic. This looks OK, no error messages. 
But http://localhost/nagios is still a no-no : page not found.
Package installed : nagios2 / nagios2-common / nagios2-plugin-basic

All the documentations I found is about installing nagios from source.

Is there anybody who managed to install it via Synaptic ?
Any help greatly appreciated.

Philippe