using pulsaudio, i wasn't able to hear the Skype's sound properly when using it.
In fact there is what i'm experiencing :
When skype play a sound, ALL the sounds of the system (here i was at a podcast by clementine) begin to make "noises", skype included. Thats very disturbating é_è
Even "muting" skype on pulsaudio make all the other sounds input became wild. Ahhhhr. What the hell ?