OS X has trouble recognizing my soundcard (?) (quicksilver 733, built-in audio here)
the thing is, I boot, no sound, I put play on itunes ... no sound, I go to system preferences>audio, and after waiting like 10-15 secs, I finally get audio.
Also there are smetimes where I loose audio, and then gain it back after some time ... (20 secs or so)