I have exactly the same problem. After upgrading from Jaunty to Karmic Alpha 6, still in Karmic Beta. Many flash games are working fine, but most of video players are not (youtube, vimeo, etc). Problem is strange, because sometimes youtube player works fine, but only if it is embedded in other page (facebook, for example).
When LMB is not working I can click RMB somewhere on flash app, and then LMB on selected button - it take desired action, but only for one time. I's really annoying.
I have exactly the same problem. After upgrading from Jaunty to Karmic Alpha 6, still in Karmic Beta. Many flash games are working fine, but most of video players are not (youtube, vimeo, etc). Problem is strange, because sometimes youtube player works fine, but only if it is embedded in other page (facebook, for example).
When LMB is not working I can click RMB somewhere on flash app, and then LMB on selected button - it take desired action, but only for one time. I's really annoying.