Komenna sudo gedit /etc/apt/sources.list
Korvaa koko teksti tällä: # Automatically generated sources.list
# http://www.ubuntulinux.nl/source-o-matic
#
# If you get errors about missing keys, lookup the key in this file
# and run these commands (replace KEY with the key number)
#
# gpg --keyserver subkeys.pgp.net --recv KEY
# gpg --export --armor KEY | sudo apt-key add -
# Ubuntu supported packages (packages, GPG key: 437D05B5)
deb http://se.archive.ubuntu.com/ubuntu dapper main restricted
deb http://se.archive.ubuntu.com/ubuntu dapper-updates main restricted
deb http://security.ubuntu.com/ubuntu dapper-security main restricted
# Ubuntu supported packages (sources, GPG key: 437D05B5)
deb-src http://se.archive.ubuntu.com/ubuntu dapper main restricted
deb-src http://se.archive.ubuntu.com/ubuntu dapper-updates main restricted
deb-src http://security.ubuntu.com/ubuntu dapper-security main restricted
# Ubuntu community supported packages (packages, GPG key: 437D05B5)
deb http://se.archive.ubuntu.com/ubuntu dapper universe multiverse
deb http://se.archive.ubuntu.com/ubuntu dapper-updates universe multiverse
deb http://security.ubuntu.com/ubuntu dapper-security universe multiverse
# Ubuntu community supported packages (sources, GPG key: 437D05B5)
deb-src http://se.archive.ubuntu.com/ubuntu dapper universe multiverse
deb-src http://se.archive.ubuntu.com/ubuntu dapper-updates universe multiverse
deb-src http://security.ubuntu.com/ubuntu dapper-security universe multiverse
# Cipherfunk multimedia packages (packages, GPG key: 33BAC1B3)
deb ftp://cipherfunk.org/pub/packages/ubuntu/ dapper main
# Cipherfunk multimedia packages (sources, GPG key: 33BAC1B3)
deb-src ftp://cipherfunk.org/pub/packages/ubuntu dapper main
Sitten komennat gpg --keyserver subkeys.pgp.net --recv 33BAC
gpg --export --armor 33BAC| sudo apt-key add -
Sitten sudo apt-get update
sudo apt-get install flashplugin-nonfree sun-java5-jre sun-java5-fonts sun-java5-plugin
sudo update-flashplugin