I have done some test and I've seen that sometimes webfonts aren't loaded properly. Link: http://css.flepstudio.org/css3/font-face.html

Access control prevents the font to load in Gecko (something that is not implemented in WebKit). from the linked page: @font-face{ font-family: 'Eldiablo'; src: url('http://www.onsitus.it/css3/web-fonts/eldiablo.ttf'); } The font is not on the same server as the webpage. Testing the font locally works fine on all platforms. Also works correctly when viewing http://www.onsitus.it/css3/web-fonts/index.html see bug 475182 and bug 457825. I think this should be duped to bug 475182.