Hello everybody, here is what happened. First of all, i upgraded over SL to Lion DP4 and than to GM. Everything worked like a charm, no glitches, bugs or slow guy animations like many posted before, perfect. But few hours ago, i updated Skype to 18.104.22.1683, and after that when i try to watch 720p/1080p video on the internet (e.g. YouTube), Safari become totally unresponsive and video lags a lot. I also tried Chrome, same thing happened. Does anyone have any idea what this could be and how to fix it, please. I am not sure that Skype did this, but it is prime suspect at this point. Please help, this is very annoying. P.S. This is happening on MB Pro from the signature.