mysql> select * from exp_actions;
+-----------+--------------+-----------------------------+
| action_id | class        | method                      |
+-----------+--------------+-----------------------------+
|         1 | Comment      | insert_new_comment          |
|         2 | Comment_CP   | delete_comment_notification |
|         3 | Mailinglist  | insert_new_email            |
|         4 | Mailinglist  | authorize_email             |
|         5 | Mailinglist  | unsubscribe                 |
|         6 | Member       | registration_form           |       <<< ACHTUNG!
|         7 | Member       | register_member             |       <<< ANOTHER ACHTUNG!
|         8 | Member       | activate_member             |
|         9 | Member       | member_login                |
|        10 | Member       | member_logout               |
|        11 | Member       | retrieve_password           |
|        12 | Member       | reset_password              |
|        13 | Member       | send_member_email           |
|        14 | Member       | update_un_pw                |
|        15 | Member       | member_search               |
|        16 | Member       | member_delete               |
|        17 | Trackback_CP | receive_trackback           |
|        18 | Weblog       | insert_new_entry            |
|        19 | Search       | do_search                   |
+-----------+--------------+-----------------------------+