Fixed double sending of headers problem with S3 cache

airtime_mvc/application/common/FileIO.php

@@ -63,9 +63,6 @@ class Application_Common_FileIO
             }
         }
 
-        //Squashes headers() warning on PHP 5.3/ubuntu 12.04:
-        flush();
-
         //We can have multiple levels of output buffering. Need to
         //keep looping until all have been disabled!!!
         //http://www.php.net/manual/en/function.ob-end-flush.php