[tyche]

I have it too, same symptoms as everyone else.

I've noticed something though.. If I pause a second after I highlight the video I want to watch, I almost never get the lockup. If I scroll through and hit enter as soon as the video is highlighted, there's a high probability of the lockup.

This has been my experience. The times where I've had the audio/no video followed by freeze up is when I scrolled through the list quickly and pressed play.
With 12.04 now out I maybe it will be worth testing.