This goes out to perusio and those using his configs.
I have been using perusio's configs and when using the media module and wysiwyg to insert images, the media picker was not loading properly. Some js, css files were failing with 444 errors. It turned out to be the referer including the string "video" which is one of the strings that when matched in blacklist.conf returns a 444.
He is my post on the media module project page.
http://drupal.org/node/1045224#comment-4339622
Dave