localost versus mydomain

[mess-mate <mess-mate@wanadoo.fr>]

Hi,
i've troubles with my localhost.
When i do a http://localhost/xxx
'requested url was not found....' error.
The server search for http://mydomain.com/xxx

I have a /var/www/mydomain.com
and /var/www/xxx (with an alias to xxx)

mydomain.com is a enabled site in /etc/apache2/sites-enabled.
Debian/etch

How can i get localhost as it normally must do ?

mess-mate                               
-- 

In India, "cold weather" is merely a conventional phrase and has come into
use through the necessity of having some way to distinguish between weather
which will melt a brass door-knob and weather which will only make it mushy.
		-- Mark Twain