I get these errors when I try an apt-get update. Is there some fault on the repository servers?
W: Failed to fetch http://packages.siduction.org/kdenext/dists/kde-frameworks/main/i18n/Translation-en_GB Bad header line
W: Failed to fetch http://packages.siduction.org/kdenext/dists/kde-frameworks/main/i18n/Translation-en Bad header line
W: Failed to fetch http://ftp.spline.de/pub/siduction/base/dists/unstable/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ftp.spline.de/pub/siduction/base/dists/unstable/main/binary-i386/Packages Bad header line
W: Failed to fetch http://ftp.spline.de/pub/siduction/extra/dists/unstable/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://ftp.spline.de/pub/siduction/fixes/dists/unstable/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ftp.spline.de/pub/siduction/fixes/dists/unstable/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
nope - but it may be that your network connection or name resolving is broken
It appeared to fix itself. There may have been some problems connecting to the server. Perhaps it was handling too many connections