I'm not sure what is going on but the font renders fine and then freaks and becomes unreadable.
Probably has to do with typekit (http://typekit.com/). I'm using the beta of typekit because it seemed like a neat way of using @font-face, but I guess it's more beta than I expected. What browser are you using?
firefox, arch-linux with vimperator. Both flash and javascript are enabled.