Oovoo started all of the sudden to produce noise artifacts in every sound it played, be it video/voice conference or notification sounds. There is noise even in the start-up sound of the application.
What makes it more annoying is the fact that the first time I used it everything was fine.
It can't be a hardware or OS problem, since everytihing else is working perfectly (for example, using iChat, Skype or Gizmo).