title: Font Awesome is showing empty square instead of the icon on Chrome only and under an IP only
body: <p>i read all other posts related to this problem and:</p>
  
  <ul>
  <li>no, my client is not using any adblocker or other extensions</li>
  <li>i'm including the css with the absolute URL</li>
  <li>i'm using  instead of </li>
  </ul>
  
  <p>The strange thing is that to me everything works perfect on all computers and all browsers.</p>
  
  <p>My client saw it perfectly until last week but the page hasn't been modified! Now they see the famous empty square instead of the right icons.</p>
  
  <p>What could they have installed that stop it ONLY on chrome/desktop.
  Chrome is the latest version, same as mine!</p>
  
  <p>Because if it's a problem that only them will see it's fine, but i'd like to understand if there's a common condition that even other users can have.</p>
  
  <p><strong>I build up a stupid page: <a href="http://sviluppo3.sitotemporaneo.com/test/ciccio.html" rel="nofollow">http://sviluppo3.sitotemporaneo.com/test/ciccio.html</a>
  they see 3 blank squares in the top left corner.</strong></p>
  
  <p>Tnx!</p>