http://www.cbsnews.com/8301-205_162-57580551/boston-manhunt-complicated-by-ustream-twitter/
"By the time police were getting ready to make a move, at least 260,000 people were listening to the police scanner live. About 2.32 million viewers were listening in on Ustream.tv. At about 8 p.m. ET, police could be heard saying on the scanner: "We also have a problem with your downlink. It's being broadcast on the Internet."
Never mind. I reinstalled adobe flash and accepted the ustream cookie. One or both of those actions fixed it.
We’re Freepers, after all. :D