OK, I was change litelly my httpd-vhosts.conf :
NameVirtualHost palaisdesdesserts.com:80
<VirtualHost palaisdesdesserts.com:80>
ServerAdmin
jestom@free.fr
DocumentRoot /opt/lampp/htdocs
ServerName
www.palaisdesdesserts.com
# ServerAlias
www.dummy-host.example.com
ErrorLog /opt/lampp/htdocs/html/palaisdesdesserts.com-error_log
CustomLog logs/palaisdesdesserts.com-access_log common
</VirtualHost>
NameVirtualHost gourmandises-luberon.com:80
<VirtualHost gourmandises-luberon.com:80>
ServerAdmin
jestom@free.fr
DocumentRoot /opt/lampp/htdocs/html/gourmandises-luberon
ServerName
www.gourmandises-luberon.com
# ServerAlias
www.dummy-host.example.com
ErrorLog /opt/lampp/htdocs/html/gourmandises-luberon.com-error_log
CustomLog logs/gourmandises-luberon.com-access_log common
</VirtualHost>
NameVirtualHost wireless-gargas.com:80
<VirtualHost wireless-gargas.com:80>
ServerAdmin
jestom@free.fr
DocumentRoot /opt/lampp/htdocs/html/wireless-gargas
ServerName
www.wireless-gargas.com
# ServerAlias
www.dummy-host.example.com
ErrorLog /opt/lampp/htdocs/html/wireless-gargas.com-error_log
CustomLog logs/wireless-gargas.com-access_log common
</VirtualHost>
NameVirtualHost aptapol.com:80
<VirtualHost
www.aptapol.com:80>
ServerAdmin
jestom@free.fr
DocumentRoot /opt/lampp/htdocs/html/aptapol
ServerName
www.aptapol.com
# ServerAlias
www.dummy-host.example.com
ErrorLog /opt/lampp/htdocs/html/aptapol.com-error_log
CustomLog logs/aptapol.com-access_log common
</VirtualHost>
and now all my VirtualHosts are going to
www.
So my virtual hosts are not activated.