i don't know your sense of humor, anyway, it's really not funny for him
This link redirects to http://www.mediafire.com/error.php?errno=320
and that message appears:
"Invalid Quickkey. This error has been forwarded to MediaFire's development team.
The quickkey you provided for file download was invalid. This is usually
caused because the file is no longer stored
on Mediafire. This occurs when the file is removed by the originating user or Mediafire."
if you don't get it, it seems to be an odd exception.