Since the live stream is sadly not working for most people, we downweighted this post. Somebody let me know if it starts working again! In the meantime, an HN user has been keeping live notes at https://news.ycombinator.com/item?id=8442712.
By the way, it's working now. Just have to keep refreshing.
When we did them on JTV, we had more than enough viewing capacity to handle the stream, but the uplink was always horrible, even when we had a "dedicated" network. When you have that many "sophisticated" users (i.e. bandwidth hogs) in one space, you're pretty much going to saturate any upstream bandwidth that hasn't been carefully provisioned for the event.