Sociable is working for me, but I just tried now to change some of the plugin's setting on the admin menu, and when trying to save it I've got this error message:
Method Not Implemented
GET to /wp-admin/options-general.php not supported.
Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.
Have anybody encountered that? Is there a proboblem for sociable and WP2.8.4?