Yeah I just found out HTML5 is indeed working without that addon, so I've removed it. I'm REALLY liking Firefox right now! Awesome improvements! I'd like to see them focus on ironing out bugs/improving upon what's already here instead of looking to change things and reinvent the wheel. Because what they have right now is a very good thing. I'd like to see a 25.1, 25.2, etc... instead of a 26.