KHotKeys doesn't load its config file

Hi all, I have the following problem: I have configured some hotkeys using the “Input Actions” in “System Settings”. They worked just fine, until I restarted the computer. Now they don’t work. Strange is that even PrtScr key (which by default should start KSnapshot) doesn’t work. I checked the ~/.kde4/share/config/khotkeysrc file, and everything there seems fine. Where could be the problem? Already tried restarting the KHotKeys, several times, no change…