Comment 9 for bug 66232

If possible, I would try to reproduce this with a clean install of edgy, or a livecd environment. Since you dist-upgraded from dapper to edgy (I'm assuming) there may be a config file or something left over in your ~/.kde folder that's causing this problem. You might also try moving that folder to ~/.kde_backup or similar and have KDE recreate ~/.kde . Just some ideas.

If it's still a problem then you should report this upstream to bugs.kde.org, after checking to see if it's already in their bug tracker.