brien@brien-pc:~$ sudo apt-get -f skype
sudo: unable to resolve host brien-pc
E: Invalid operation skype
brien@brien-pc:~$ sudo apt-get -f install
sudo: unable to resolve host brien-pc
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
brien@brien-pc:~$ sudo apt-get build-dep skype
sudo: unable to resolve host brien-pc
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
brien@brien-pc:~$

Package dependencies cannot be resolved (when installing skype from ubuntu software center)