I finally upgraded my Thinkpad X201 from Kubuntu Lucid to Maverick over the weekend.  I’m pleased to report that the process was nearly flawless using KPackageKit.  Despite segfaults in KPackageKit which didn’t seem to deter it, the upgrade process went very smoothly and took about an hour.

I’ve only encountered three minor problems:

There were some strange dependencies that prevented Kmail from working properly; I had to manually install libkontactinterface4 and libakonadi-contact4.  Akonadi, I wish that it had never been thought of.

cups-pdf disappeared and had to be manually reinstalled.

Bluetooth file receive stopped working.  After a bit of investigation, Debian bug report 609022 had the critical piece of information I needed:  just

ln -s /usr/share/kde4/apps/bluedevil/bluedevil.notifyrc \
~/.kde/share/config/bluedevilfilereceiverhelper.notifyrc

and everything is sweet.