On Skype 4.1 under Ubuntu 13.04 and 13.10 I received this today:
Segmentation Fault (Core Dumped)
Not the best thing when you need to get on Skype for work. It seems to be something introduced since an update to libqtwebkit version 2.3.0. If you can, downgrade to a previous version to fix the issue. If not, a work around is to use the MESA driver on the command line as so:
This will launch Skype and bypass the seg fault.