gnome audio problem - alert sound effect not changing

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https://bbs.archlinux.org – Hi, I have a problem, my alert sound effect is not being changed as it is supposed to (If I remember correctly).Under gnome 3.2, If I open the default sound application and change to a different alert sound effect (Bark, Drip, Glass, Sonar) the change is not made untill the next reboot, whereas before it used to change instantly (I think, cant remember 100%). I downloaded and installed paprefs(https://www.archlinux.org/packages/?name=paprefs) and pavucontrol(https://www.archlinux.org/packages/?name=pavucontrol)  trying to fiddle with DLNA and pulseaudio, and I think that since then I have (HowTos)