Have you noticed issues with any other downloadable fonts? If you can't access any of them, check this first:

(1) In a new tab, type or paste about:config in the address bar and press Enter. Click the button promising to be careful.

(2) In the filter box, type or paste gfx and pause while the list is filtered

(3) If the gfx.downloadable_fonts.enabled is set to False, double-click it to set it back to the default value of True.

If downloadable fonts usually work but only occasionally do not, you might check whether any of your add-ons might be filtering them.

This particular downloadable font has caused some problems for others. Could you try the suggestions in the following thread: Characters codes are not showing correctly in my wesbite. I use other browser it works but her ein mozilla its not. Please help. Since the suggested keyboard shortcuts are for Windows, you might need to make a few changes along the way.

Thanks jscher2000 for your reply. I checked the gfx.downloadable_fonts.enabled and is set to true. Then I turn off all my Add-on for avoid issues with down-loadable fonts and finally read the recommended thread and follow those instructions and I still have the same problem.

Do you see any error messages in the Error Console (Firefox/Tools > Web Developer; Ctrl+Shift+J) or Web Console (Firefox/Tools > Web Developer; Ctrl+Shift+K) related to downloading this font?

You need to reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files from the server.

• Press and hold Shift and left-click the Reload button.
• Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
• Press "Command + Shift + R" (MAC)

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

• Do NOT click the Reset button on the Safe Mode start window or otherwise make changes.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

I don't see any error message in the Web console, only warning for CSS properties and various GET request completed successful (some css, js, json, gif and apparently any web method)

Did you try Firefox Safe Mode?

Make sure that you allow pages to choose their colors in Firefox.

• Tools > Options > Content : Fonts & Colors > Colors : [X] "Allow pages to choose their own colors, instead of my selections above"

Yes I tried the safe mode of firefox and be sure that "Allow pages to choose their own colors, instead of my selections above" options was selected and the problem still persist.

Do you have problems with downloable fonts on other websites like the Google webfonts?

• http://www.google.com/webfonts

Yes. I have exactly this problem.

Try to create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

I have created a new profile for test and the problem persist. I entered to google fonts web site and the result is the same.

I really appreciate you effort cor-el and I hope that it issue can be resolved.

Thank you very much.

Hello Again. I'm here for say sorry about post this issue here because the problem never wasn't firefox instead was my operative system (opensuse with Gnome 3.8) configuration that cause this bad behavior. The simple reason was the selection of region and language because the most generic language configuration for Spanish is [Spanish from Spain], but my selection was [Spanish from Colombia] this cause the bad behavior in firefox. I change the selection and the problem was solved.

Again sorry for post this issue as part of firefox.

Here firefox show properly the Unicode icon.

I wonder why the country affects the display (or download) of the font? Firefox sends a header to websites indicating which languages are preferred. Could that be it? Hmmm...

@font-face {

 font-family:'FontAwesome';
 src:url('../font/fontawesome-webfont.woff');
 src:url('../font/fontawesome-webfont.eot?#iefix') format('embedded-opentype')
   url('../font/fontawesome-webfont.ttf') format('truetype');
 font-weight:normal;
 font-style:normal

}

i solved this problem my IIServer,

fontawesome-webfont.eot changed to fontawesome-webfont.woff