title: Why does Firebug show a "206 Partial Content" response on a video loading request?
body: <p>I have a bunch of html5 video elements, with their preload attribute set to "auto". They start loading just fine, but I think there might be a problem with their caching, because each time I reload the page (without clearing the cache), they start all over again.</p>
  
  <p>When I checked the Network panel in firebug, I noticed everything else (images and files) was giving me a "304 not modified" message as espected, while the videos (and audio) files were giving me a "206 partial content" message, in duplicated entries.</p>
  
  <p>The "206 partial content" response also appears in duplicated entries when the page is loaded with the cache cleared, instead of a "200 OK" response, as it would be expected.</p>
  
  <p>Is this a normal behavior for video and audio elements? If not, how could it be corrected?</p>