KDE 3.3.2 - no system sounds after updating

Hello everyone, I hope some of you can help me. Yesterday I updated from KDE 3.3.0 to 3.3.2 on SUSE Linux 9.2 but since then, KDE doesn't play system sounds. My first guess was, that something could be wrong with the pathes to the sound files, but they're on the right place. When I type in (for example) 'artsplay /opt/kde3/share/sounds/KDE_Startup_3.ogg' everything works fine, so what could it be? If you need additional information, please ask. Thanks, Chris Mager.