Se você ficar preso tente alterar o servidor para "servidor principal" em vez dos servidores do seu país. Quando fiz isso, o Skype foi instalado perfeitamente no Centro de Software.
É suposto ser um processo fácil:
sudo dpkg --add-architecture i386
sudo add-apt-repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner"
sudo apt-get update
sudo apt-get install skype
Mas na primeira linha dpkg --add-architecture i386 , recebo um erro
dpkg: error: unknown option --add-architecture
Type dpkg --help for help about installing and deinstalling packages [*];
Use 'dselect' or 'aptitude' for user-friendly package management;
Type dpkg -Dhelp for a list of dpkg debug flag values;
Type dpkg --force-help for a list of forcing options;
Type dpkg-deb --help for help about manipulating *.deb files;
Options marked [*] produce a lot of output - pipe it through 'less' or 'more' !
Como resolver isso para que eu possa finalmente instalar o Skype?
EDITAR
No synaptic, recebo o erro The following packages have unmet dependencies:skype: Depends: skype-bin but it is a virtual package
Se eu tentar instalar o skype-bin, recebo um erro:
The following packages have unmet dependencies: skype-bin:i386 : Depends: libqt4-dbus:i386 (>= 4:4.5.3) but it is not going to be installed
Depends: libqt4-network:i386 (>= 4:4.8.0) but it is not going to be installed
Depends: libqt4-xml:i386 (>= 4:4.5.3) but it is not going to be installed
Depends: libqtcore4:i386 (>= 4:4.7.0~beta1) but it is not going to be installed
Depends: libqtgui4:i386 (>= 4:4.8.0) but it is not going to be installed
Depends: libqtwebkit4:i386 (>= 2.2~2011week36) but it is not going to be installed
Recommends: sni-qt:i386 but it is not going to be installed
Recommends: libasound2-plugins:i386 but it is not going to be installed E: Unable to correct problems, you have held broken packages.
Se você ficar preso tente alterar o servidor para "servidor principal" em vez dos servidores do seu país. Quando fiz isso, o Skype foi instalado perfeitamente no Centro de Software.