There is a problem with Skype and NVidia and (I believe) some ATI drivers which causes a segmentation fault when launched. This workaround fixes it:
then copy this:
mv /usr/bin/skype /usr/bin/skype-bin
save and close and then:
However I am still getting issues with Skype running 64bit 13.04
chmod 0755 /usr/bin/skype
The notification icon does not show. sni-qt is installed.
Sound output is set to default audio output, but can not be muted. Everything else will mute, but Skype notifications continue to boom out.
Help would be gratefully received!