We lost connections four times and could not broadcast this Sunday.
I had some fairly quick responses from Ustream and received some tutoring from Little Ichabod, plus comments from our retired broadcaster in Michigan.
Ustream's position is that I need more bandwidth, so I phoned Cox. They doubled it for $11 more a month.
That is the easiest and fastest fix. There are a few tricks in getting more data out the door, besides even more bandwidth. I am checking into those as well.