Windows notification sounds gets distorted (Playback devices--Test sound), usually when opening youtube in firefox, currently using default win drivers (tried realtek drivers with no luck). When that happens i have to go into playback devices--->Properties---->Advanced, and change Default format (Sample Rate) hit Apply and then it goes to normal.

Is anyone else experiencing this?

Additional Info:

Other sounds (movies,games etc) get distorted only if they are high enough middle and low's are ok as far as i can tell.