font-face with wrong MIME type in Chrome

As usual, different browsers have different needs. Here is a cross browser @fontface declaration, taken from the Paul Irish blog -

@font-face {
  font-family: 'Graublau Web';
  src: url('GraublauWeb.eot');
  src: local('☺'),
         url('GraublauWeb.woff') format('woff'), url('GraublauWeb.ttf') format('truetype');
}

.eot is for IE, the rest of the browsers use either .woff or .ttf If you need to generate the different types from the source font, you can use Font Squirrel's font-face generator

You also need to an .htaccess to the location of the fonts adding the following types:

AddType application/vnd.ms-fontobject .eot
AddType font/ttf .ttf
AddType font/otf .otf
AddType application/x-font-woff .woff

You can ignore the warning and may want to consider this post on the topic, Proper MIME type for fonts

Which also mentions the following:

"Note: Because there are no defined MIME types for TrueType, OpenType, and WOFF fonts, the MIME type of the file specified is not considered."

source: http://developer.mozilla.org/en/css/@font-face

Your font files are not being trasferred with the proper MIME type. This is a web server configuration issue that can easily be fixed.

For nginx, merge this with existing types config, usually found in the /etc/nginx directory:

types {
    application/vnd.ms-fontobject    eot;
    application/x-font-woff    woff;
    font/otf    otf;
    font/ttf    ttf;
}

For Apache, add these lines to .htaccess found in your Document Root:

AddType application/vnd.ms-fontobject .eot
AddType font/ttf .ttf
AddType font/otf .otf
AddType application/x-font-woff .woff