Hi,
I know that Skype is a proprietary software, but I want to let you know that qtwebkit-2.3.0-1.fc17.i686 from kde-unstable (Fedora 17) makes Skype segfault at startup.
The setup that works is the following:
renoir ~ $ rpm -q skype qtwebkit.i686 skype-4.1.0.20-fc16.i586 qtwebkit-2.2.2-5.fc17.i686
If I upgrade using kde-unstable, then Skype segfaults.