title: .htaccess 500 internal server error when set ExpiresActive
body: <p>In my <code>.htaccess</code> I have this code:</p>
  
  <pre><code>&lt;FilesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|js|css|swf|txt|html|x-html|php|css|xml|js|woff|ttf|svg|eot)(\.gz)?$"&gt;
  ExpiresActive On
  Header set Expires "Sun, 27 May 2012 00:00:00 GMT"
  Header unset ETag
  FileETag None
  &lt;/FilesMatch&gt;
  </code></pre>
  
  <p>It seems to work perfectly on some servers, but not on one of my websites. I get a 500 Internal Server Error.
  Is there anything wrong in the config, or do I have to contact my host?</p>