http://www.akker-huis.nl/linux-ubuntu.php
http://lcardinaals.wordpress.com/category/ubuntu/
http://fullcirclemagazine.org/downloads/
http://www.howtogeek.com/howto/29584/safely-remove-ppas-and-roll-back-to-stable-versions-in-ubuntu/
http://lifehacker.com/5665765/macbuntu-makes-your-linux-desktop-look-like-mac-os-x
http://lifehacker.com/5661901/medibuntu-repository-installs-non+free-apps-in-ubuntu-1010
http://lifehacker.com/5655959/install-and-switch-to-libreoffice-in-ubuntu
http://ubuntu-tweak.com/
http://lcardinaals.wordpress.com/2010/08/17/ubuntu-tweak-bijgewerkte-versie/
http://lifehacker.com/5648849/use-ubuntu-tweak-to-purge-and-downgrade-third+party-apps
http://www.howtogeek.com/howto/29584/safely-remove-ppas-and-roll-back-to-stable-versions-in-ubuntu/
