I am using protected node for my site in a way that i use it for anonymous users to post data and put password on it if they wish to edit it.
What i need is to put also password on node deletion as now there is no password for delete. I have modification to make it work only on edit, on view no password is asked. IF somebody can make this work also on delete (ask password before deletion) please contact me.

http://drupal.org/project/protected_node