It started a few days ago, around Feb 14.
I'm running Firefox on Ubuntu, Lucid Lynx, with Shockwave Flash (flash player) 11.2 r202 which was just updated on Feb 15.
Just about that time I noticed that some of the videos on youtube.com won't play, the video play object says "This video is currently unavailable".
Then after a while, more and more until all videos on youtube.com won't play, it's Feb 17 now nothing plays.
I don't know if this is a problem with youtube or flashplayer. I tried using some downloading plugins and they don't play/download either, the error says "no stream".
Is anyone else experiencing this?