I have one ugly source list, I suspect with many duplicate repositories that are likely to have different versions of the same programs with different dependencies.
Where can I get a reliable source list for Knoppix?
I run Knoppix 4.0
My source list:


# /etc/apt/sources.list for Knoppix
# If you want to do a "full upgrade", you should first
# upgrade the Packages from Debian/unstable (KDE & Co.)
# before doing a (dist-)upgrade for Debian/testing.
#
# See sources.list(5) for more information, especialy
# Remember that you can only use http, ftp or file URIs
# CDROMs are managed through the apt-cdrom tool.

# Security updates for "stable"
deb http://security.debian.org stable/updates main contrib non-free
deb http://security.debian.org testing/updates main contrib non-free

# Stable
deb http://ftp.de.debian.org/pub/debian stable main contrib non-free

# The non-US branch doesn't exist anymore since sarge. -KK
# deb http://ftp.de.debian.org/pub/debian-non-US stable/non-US main contrib non-free
# deb-src http://ftp.de.debian.org/pub/debian-non-US stable/non-US main contrib non-free
# deb-src http://ftp.de.debian.org/pub/debian-non-US testing/non-US main contrib non-free
# deb http://ftp.de.debian.org/debian-non-US un

stable/non-US main contrib non-free
# deb-src http://ftp.de.debian.org/debian-non-US unstable/non-US main contrib non-free
# deb http://ftp.de.debian.org/pub/debian-non-US testing/non-US main contrib non-free

# Stable Sources
# deb-src http://ftp.de.debian.org/pub/debian stable main contrib non-free

# Testing
deb http://ftp.de.debian.org/pub/debian testing main contrib non-free

# Testing Sources
# deb-src http://ftp.de.debian.org/pub/debian testing main contrib non-free

# Unstable
#deb http://ftp.de.debian.org/debian unstable main contrib non-free

# Unstable Sources
# deb-src http://ftp.de.debian.org/debian unstable main contrib non-free

# Experimental
deb http://ftp.de.debian.org/debian ../project/experimental main contrib non-free

# Experimental Sources
# deb-src http://ftp.de.debian.org/debian ../project/experimental main contrib non-free

# ndiswrapper source
#deb http://ndiswrapper.sourceforge.net/debian ./

# KDE 3.4 (not in sarge)
#deb http://pkg-kde.alioth.debian.org/kde-3.4.1/ ./
deb-src http://pkg-kde.alioth.debian.org/kde-3.4.1/ ./

# Unichrome graphics driver
# deb http://www.physik.fu-berlin.de/~glaweh/debian/ unichrome/
# deb-src http://www.physik.fu-berlin.de/~glaweh/debian/ unichrome/

# NX stuff
# deb http://www.kalyxo.org/debian/ experimental main
# deb http://www.kalyxo.org/debian/ unstable main

# ndiswrapper
# deb http://rigtorp.se/debian unstable/
# deb-src http://rigtorp.se/debian unstable/

# Blades Repository (pppoeconf & co)
# deb http://people.debian.org/~blade/testing ./
# deb-src http://people.debian.org/~blade/testing ./

# deb cdrom:[Debian GNU/Linux 2.2 r3 _Potato_ - Official i386 Binary-1 (20010427)]/ unstable contrib main non-US/contrib non-US/main

# Knoppix special packages resource at LinuxTag HQ
# deb http://developer.linuxtag.net/knoppix ./
deb-src http://developer.linuxtag.net/knoppix ./

# deb http://snapshot.debian.net/archive pool gcc
deb-src http://snapshot.debian.net/archive pool gcc

# From the Kanotix archives
#deb http://kanotix.com/files/debian/ ./
deb-src http://kanotix.com/files/debian/ ./

# Packages from ubuntu. CAUTION, they don't mix well with Debian
deb http://de.archive.ubuntu.com/ubuntu hoary main universe multiverse
deb-src http://de.archive.ubuntu.com/ubuntu hoary main universe multiverse
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