Isn't youtube using html5 video too?
If it is that might explain why i have not had trouble lately viewing youtube videos the few times I have bothered. (I even have speakers/earphones now so have tried once or twice just to see if those work. I still hate the lack of random-access visual scan for parts worth reading though so still prefer written material. Maybe a speed control would help to be able to make it go faster without actually missing what you are zooming through...)
-MarkM-