Why won't Skype install?
I've had some problems with the Software Center as well.
Try to install lib32stdc++6 :
sudo apt-get install lib32stdc++6
Then cd
to the directory where you downloaded the Skype.deb file. If you downloaded it to your Downloads folder, you would type:
cd ~/Downloads
Then install the .deb package.
sudo dpkg -i skype*.deb
This fixed it for me.