Young Kwai Chang Caine:
Anyone know how I can fix this?
Master Po:
Grasshopper, is the fault in apt speaking German, or is the fault in you not speaking German? Seek to be one with all life.
Also seek your /etc/apt/sources.list - if the lines still refer to ftp.de.debian.org (as supplied by the CD), try switching to a different mirror from the page http://www.debian.org/mirror/list

-- Ed