Ubuntu :: Apache And VHost Not Working After Upgrade

After Ubuntu autoupgraded my Apache, some VHosts are nor working anymore and PHP Code is not oarsed any longer. I think the apache2.conf was overwritten. I do not have a clue how ti fix that, I tried some things but now I am stuck. I have only three hosts: the default, an svn (over port 443) and one called "imcar" which has PHP scripts to be parsed.

So, in my apache2.conf I have this:
Code:
DocumentRoot /var/www
ServerName localhost

The imcar host is set up like this:
Code:
<VirtualHost *:80>
ServerName imcar
ServerAdmin webmaster@imcar
DocumentRoot /var/www/imcar

<Directory /var/www/imcar>
Options FollowSymLinks Indexes
AllowOverride None
Order allow,deny
allow from all
</Directory>

ErrorLog /var/log/apache2/imcar-error.log
LogLevel warn
CustomLog /var/log/apache2/access.log combined
ServerSignature On
</VirtualHost>

If I go to imcar in the browser, the default DocumentRoot is shown. If I remove the default DocumentRoot, I get a 404 on imcar.