I have tracked this down I think. A link like http://mysite.org/new/user/112/edit works for the user. But Drupal uses "me" This displays the User's page. The edit Tab is a link to http://www.mysite.org/new/user/me/edit But this is then switched to http://www.mysite.org/new/user/0/edit which of course is and should be blocked. How do I fix this?
I do have the Edit own user account permissions installed.