I'm sure it's no surprise to anyone, but the game is loading fine and playing great for me.
I've started to keep my Firefox web-site cookies cleared like I do with my Adobe web site storage settings manager before I play the game.
In Firefox 4 click, Firefox (upper left) > options > privacy > show cookies < And simply remove all or any of the cookies from web-sites you don't normally visit. Keep the cookies from the web-site you frequent the most to save any log-in info.
This thread has great info to help with smoother game-play too.