This night I got a sms from SaroEngles - he told me that http://download.cegit.de/kde-windows is down due to this article. As I'm not a student and have to work for my money, I did not read it until this morning. ;)
I couldn't do anything against the downtime. Later Ralf told me that he has a user limit and his server is working fine. Therefore we ask all kde/windows users to not use download.cegit.de or webdev.cegit.de as their download mirror anymore. We'll likely remove them from the mirror list when the new installer, which can also download from ftp servers then, will be out.