https://bugs.kde.org/show_bug.cgi?id=397746
--- Comment #4 from Lukas Sabota <lu...@lwsabota.com> --- I apologize for all the noise on this thread but I believe I have found the culprit: phonon-gstreamer When KMessageBox is raised, it attempts to play the default notification sound. In my configuration, when I have "phonon-vlc" as the preferred backend in kcm module "Multimedia->Audio and Video->Backend", the sound is played properly and the "Paste Warning" dialogs and "Sorry" dialogs do not crash the application. However - for some reason when i am using the phonon-gstreamer backend, I do not hear any notification sound when the KMessageBox dialogs are raised and the KMessageBox also hangs the application. It seems that whatever is trying to playy -- You are receiving this mail because: You are watching all bug changes.