如何调试pulseaudio跳过问题？

I am experiencing intermittent audio skipping problems with Youtube's HTML5 video player in Firefox 5.0 on Fedora 15. I've had audio problems with pulseaudio for years. I would like to try and debug this particular issue, since I've removed proprietary Flash from the picture, so only open source code should be relevant now.I am experiencing intermittent audio skipping p