Apache virtual directories not quite working for base FQDN

[Dotan Cohen]

On an Ubuntu 9.10 install I have a virtual host that works fine if
there is a GET argument or path after the FQDN / IP address, but not
if the FQDN / IP address is entered by itself. If there is an argument
or path, then Apache correctly  fetches the pages from the the right
place. If the FQDN / IP address appears by itself, then Apache fetches
the default "It works!" page. See here:

See these examples:
http://212.179.246.18/?d
http://212.179.246.18/

http://uk.sharingcenter.de/?d
http://uk.sharingcenter.de/

The relevant config file:
$ cat /etc/apache2/sites-available/default
NameVirtualHost *:80

<VirtualHost *:80>
    ServerName *
    DocumentRoot /var/www/default_public_html
</VirtualHost>

<VirtualHost *:80>
    ServerName uk.sharingcenter.de
    DocumentRoot /var/www/uk-sharsharingcenter-de/public_html
</VirtualHost>

The file /var/www/default_public_html/index.html has the text "Hello, world!".
The file /var/www/uk-sharsharingcenter-de/index.html has the text "uk".

Any ideas why Apache is giving the "It works!" [age when there is no
argument / path? Thanks.
Karl, please don't answer. Thanks.

-- 
Dotan Cohen

http://gibberish.co.il
http://what-is-what.com