It looks to me like you have an incomplete upgrade. My guess is that the problem is because your kdebase-data is old. I just upgraded today, and my kdebase-data is version 4:3.2.3-1. kcontrol works fine for me. I also see that a number of your X packages are 2 debian revisions out of date. Maybe you haven't done an apt-get -u dist-upgrade in a while? I hope this helps, Josh