It seemed today that Firefox was blocking the font files when using font-awesome and the web didn't work properly. But our friend Jorge from the Sphinxdev blog explained us a solution..
In order to enable automatically CORS when
a TTF, OTF, EOT or WOFF file is detected you only have to
/etc/httpd/conf.d with any name and paste
AddType application/font-woff woff AddType application/vnd.ms-fontobject eot AddType application/x-font-ttf ttc ttf AddType font/opentype otf AddType image/svg+xml svg svgz AddEncoding gzip svgz <FilesMatch ".(ttf|otf|eot|woff)$"> <IfModule mod_headers.c> Header set Access-Control-Allow-Origin "*" </IfModule> </FilesMatch>
Then restart apache and that's all. Thank you Jorge!