Super user and admin users are given acess denied for node

The problem is the one in the title, for Drupal 6.22.
It only happens with one kind of content; for that type, role A can create and view own only; all other roles can view that content type, but not create it or edit it.

In the atached image, user 1 (admin) is being given acess denied on a node, but DNA states that it should be accessible.
User 46 (DVieira) is the node owner and is of role A.

Considering the attached image, I see 1 error occurring: first user 1 (admin) and all other admin users (role 3) should be able to view and user 46 (DVieira) should be able to edit.
Furthermore both user 1 and role 3 users can edit the node - just not view it!

Any ideas?

PS: I'm sorry if I'm posting this to the worng project, but this only happens for a node type for which I'm actually using view own module features...