Just a heads up for NVidia users and users of the RPMFusion packages drivers.
Version 331.20 of the driver seems to crash Akonadi at KDE startup. Version 331.38 seems to fix it. I had to uninstall the RPMFusion drivers and use the drivers to from NVidia to confirm the findings that was reported at:
https://bugs.kde.org/show_bug.cgi?id=326480
I reported the problem to RPMFusion at:
https://bugzilla.rpmfusion.org/show_bug.cgi?id=3144
I hope we see the newest drivers soon.... I do see them being played with at RPMFusion's Rawhide repo :)
Eli