Since early today, the domain name ngberger.com has been unavailable, as the relevant domain name server seems to be off-line somewhere in Baden. Until they fix the problem, you can access the server as http://iham11.kfunigraz.ac.at.
Sorry for the inconvenience this causes: the problem lies entirely
elsewhere on the net, and my server works fine if you access it
through the link above.
Hope this helps for now.