Web Development

Search Engine Friendly URL for Joomla with suPHP

After migrating some Joomla-sites from an old server to my new webserver with suPHP the search engine friendly urls didn’t work anymore.
The main problem was that the layout was disappeared for all sites other than the main site.

In the source code of such a page I found that all CSS files had a wrong referral url:
instead of
for example.