I'm wondering if it is something to do with McAfee. They've been updating their various flavors of software for about a week now. Every day there has been a new update for either the Security Center, the firewall, the anti-virus or the spam blocker. I've checked all the settings available on each of them to see if the updates turned on or off something that would block A2K's video embedding but don't see anything that pops out at me.
Am interested in hearing from fbaezer to see if he also uses McAfee on his home computer that is having the same problem.