Works fine for me as well. What browser are you using? I know that IE8 has some problems with icon fonts.
On a side note, one thing I noticed is you’re only using a few icons, yet you’re loading all 360 glyphs and the monster .css file that ships with font awesome. You can increase the efficiency by using a site such as [icomoon](http://icomoon.io/app/ “icomoon”) or [fontello](http://fontello.com/ “fontello”) to pick only the icons you’ll need. It’ll output a trimmed down version of your files and css.
I doubt it’s what’s tripping you up, but it’s certainly not a help either.