I've upgraded my laptop Win8 64-bit so that I can start building WP8 apps. Unfortunately, Silverlight now locks up whenever I try to watch the WP8 for Beginners videos in full screen mode. I've searched everywhere and cannot find a solution to the problem. I'm viewing in IE10 Desktop Mode so everything should work fine. Any suggestions or solutions?
I'm running the same setup here, and unfortunately cannot repro. You can select a different format by clicking the Format button on the lower right of a video and select Flash or HTML5 and see if that makes a difference. Another option would be to download the files and watch them locally.