I have the same problem Shadowfoxx757 has with icons not displaying, though on my system I get random chars instead of the Unicode squares. I'm using Firefox 25.
downloadable font: download failed (font-family: "FontAwesome"style:normal weight:normal stretch:normal src index:1): bad URI or cross-site access not allowed
source: http://d260rnacdi07m9.cloudfront.net/assets/fontawesome-webfont-5f3ff21ec2321ce7c1215146d3e7d38d.woff
http://d260rnacdi07m9.cloudfront.net/assets/application-a511492ec384f61c74a679a8a46866b0.css
Line 0
downloadable font: download failed (font-family: "FontAwesome" style:normal weight:normal stretch:normal src index:2): bad URI or cross-site access not allowed
source: http://d260rnacdi07m9.cloudfront.net/assets/fontawesome-webfont-46d92da2b5f999bb039c1af16b62c15a.ttf
http://d260rnacdi07m9.cloudfront.net/assets/application-a511492ec384f61c74a679a8a46866b0.css
Line 0