No UI sounds in RC 8

I have the sounds in the Edit-menu, but not the sounds for example when closing the Friends/Contacts or IM windows. I've set the UI sound slider to full. All other sliders (except Music) are also set to full.

Ahhhh, found out what the problem was.

I had some hardware probs. In the pc shop they resetted my Bios. But in the process they activated/enabled my onboard-soundcard, although I have a Soundblaster Audigy. So I had two sound cards running at the same time.

Now I have disabled the onboard-soundcard in Bios again and the UI sounds are back. Man, you have to be a pc wizard to play SL Thought I'd let y'all know hehe...