The Safari/WebKit updates in 10.4.4 seem to be rendering the many-to-many filter interface unusable.
The select element for "available choices" never receives focus. When you click on the available choices, Safari focuses on the filter input field instead. The end result is that you can't select *any of the choices. Any more detailed reports, suggestions for a fix are welcome at this point. (The likely target for a fix is in http://code.djangoproject.com/browser/django/trunk/django/contrib/admin/media/js/SelectFilter2.js ) .
