Comment 36 for bug 494564

Actually there is a Debian repository for Skype at skype.com, which seems to work for Ubuntu too and installs the latest version.

However, it has few drawbacks:

1. It is only for i386.
2. It is not authenticated.

To use the skype.com repository you need first to remove Medibuntu's skype and skype-common packages, and then run the following commands from the shell:

echo deb http://download.skype.com/linux/repos/debian/ stable non-free >/tmp/skype.list
sudo cp /tmp/skype.list /etc/apt/sources.list.d
sudo apt-get update
sudo apt-get install skype

You need to answer 'y' when it asks you if you want to install non-authinticated package.