Vervang, met het commando
sudo gedit /etc/apt/sources.list , de complete inhoud met het volgende:
# Automatically generated sources.list
# http://www.ubuntu-nl.org/source-o-matic/
#
# If you get GPG errors with this sources.list, locate the GPG key in this file
# and run these commands (where KEY is replaced with that key)
#
# gpg --keyserver hkp://subkeys.pgp.net --recv-keys KEY
# gpg --export --armor KEY | sudo apt-key add -
# Ubuntu supported packages
# GPG key: 437D05B5
deb http://be.archive.ubuntu.com/ubuntu dapper main restricted
deb http://be.archive.ubuntu.com/ubuntu dapper-updates main restricted
deb http://security.ubuntu.com/ubuntu dapper-security main restricted
# Ubuntu community supported packages
# GPG key: 437D05B5
deb http://be.archive.ubuntu.com/ubuntu dapper universe multiverse
deb http://be.archive.ubuntu.com/ubuntu dapper-updates universe multiverse
deb http://security.ubuntu.com/ubuntu dapper-security universe multiverse
# Seveas' Ubuntu Packages
# GPG key: 1135D466
deb http://mirror.ubuntulinux.nl/ dapper-seveas all
# Ubuntu backports project
# GPG key: 437D05B5
deb http://be.archive.ubuntu.com/ubuntu dapper-backports main restricted universe multiverseDaarna ten slotte de volgende 2 commando's:
wget http://mirror.ubuntulinux.nl/1135D466.gpg -O- | sudo apt-key add -
sudo aptitude updateAls het goed is kun je vanaf dan zonder problemen je gewilde pakketten installeren.