Voir la source de Message : NameVirtualHost *:80 has no VirtualHosts

Sur debian squeeze lorsque apache redémarre il nous gratifie d'une erreur :
 Restarting web server: apache2[Sun May 06 12:10:41 2012] [warn] NameVirtualHost *:80 has no VirtualHosts
 ... waiting [Sun May 06 12:10:42 2012] [warn] NameVirtualHost *:80 has no VirtualHosts


Solution :
 
Commenter la ligne :
 NameVirtualHost *:80

Dans le fichier /etc/apache2/ports.conf

Plus d'infos :
 zcat /usr/share/doc/apache2.2-common/NEWS.Debian.gz

 * The directive "NameVirtualHost *" has been changed to "NameVirtualHost
    *:80". It has also been moved from sites-available/default to ports.conf.
    This allows to ship a proper SSL default virtual host config in
    sites-available/default-ssl, but it means that if you use several name
    based virtual hosts:
 
    - you will have to change <VirtualHost *> to <VirtualHost *:80> in your
      name based virtual hosts
 
    - you need to add more NameVirtualHost directives if you use other ports
      than 80 with name based virtual hosts. You may also have to add these
      ports to the default virtual host in /etc/apache2/sites-available/default
      (like this: "<VirtualHost *:80 *:81>").
 
    If you prefer to revert to the old setup instead (and don't need the
    default-ssl host), just change "NameVirtualHost *:80" back to
    "NameVirtualHost *" in ports.conf and "<VirtualHost *:80>" to
    "<VirtualHost *>" in sites-available/default.