How about those of us who uninstalled the stock applications? For example, I have completely uninstalled osso-filemanager and do not have com.nokia.osso-filemanager.service in /usr/share/dbus-1/services. Lucky you! I had to reboot just yesterday. Clicked the Stop button too soon when the alarm notification popped up, before the tune started playing. The notification UI closed but the alarm started playing with no way to stop it.