Going to add my voice to this. Sound has been perfect for me since Friday, then this evening when I finally was able to continue MSQ(which I only started two days ago, because I was playing with a friend who couldn't manage to get through the server queues without dc'ing until two days ago), I have music and I have menu sounds but all sound effects and voices have gone. It's so disorientating that I can't stomach continuing MSQ even if I was able to accept the degraded experience, I notice it continuously and find it extremely jarring. I can't attempt to restart the game to see if that helps because my server has a 2k+ queue(and growing) and the odds of dc are very high meaning I likely wouldn't get back in anyway.

So of the 5 possible days I could potentially have played MSQ, I've only been able play it on two of them between queues, dc's and now sound issues.

This isn't the worst mmo expansion launch I've experienced, not by a long way, but it's gradually creeping it's way up there and after today it's probably nudged it's way into the top 5.