Flash 10.1 beta 2 out.

[MouseMat2004]

Very odd. Tried it in other browsers?

edit: or can you click the play button manually to make it start?

I don't think I tried other browsers, just Firefox. Worked perfectly fine after I reinstalled the old version.

Nah I tried that. Wouldn't budge until the whole video was loaded, same for normal/HQ/HD vids. I tried Youtube, Vimeo and some others.