Nice! It's a bit fast, but fun. Coincidentally, I just finished my version about a week or two ago. I used SVG, HTML5, CSS3-Fonts, etc. Check it out:
Version 3.6.8 On Windows 7 64 bit
Also, if you have a lot of add-ons/plugins it could make it even slower (some of these try to modify the page every time it changes).
If you get any error codes, I'd love to know the details! Thx