Topic: edit.php
// Load the post.php/edit.php language file
- Remove /edit.php from the comment
$can_edit_subject = ($id == $cur_post['first_post_id'] && (($pun_user['g_edit_subjects_interval'] == '0' || (time() - $cur_post['posted']) < $pun_user['g_edit_subjects_interval']) || $pun_user['is_admmod'])) ? true : false;
Suggestion: Move the above line after // Do we have permission to edit this post?