Now I'm back from my trip to Malta with two friends. It was great. Anyway they told my friend at the check-in for the flight back to Germany that he is not in the computer system and he cannot fly. But luckily it worked out that he could fly, too. I hope to be able to upload some photos soon.
Moreover the German government for a lMHO very stupid law in the last two weeks. It prohibits to create and publish so called "hacker tools". But how should an administrator check his servers for security holes without such a software?
Last point to mention: Yesterday I've deleted my whole music collection :( I'm lucky that it seems that I could recover most of the files.