So, I trashed my preferences for the Window Server from the main Library.
And, I restarted.... and none of my USB or Firewire devices would show up.... so, a few more restarts, and everything now is back to normal
SO, I start up an HD stream of Conan (w/beard), open many tabs in Safari, open up iMovie, and No Video Skipping
There was a slow down in frame rate, but the HD stream immediately recovered.
I think by trashing the Window Server preferences, that...