I\'m using bootstrap and I added font awesome through Less, overriding the Glyphicons. The icons display OK in chrome but in Firefox i just see boxes.
This is how my
If you're like me, modifying a web.config file is something you're not allowed to touch.
Try storing all the font files (.eot, .ttf, etc) into their own local folder, and link to them locally instead of the FontAwesome CDN. Cleared it up in IE and FF for me every time.
@font-face{ font-family:'FontAwesome'; src:url('../_fonts/fontawesome-webfont.eot'); }