When trashing a post, all comments associated with this post get the status "post-trashed". They do not end up in the trash bin.
In my theme the author gets a point for posting a post or a comment. Subsequently I also want to deduct a point when the posts or comments is trashed.
Both of these functions works excellent. The problem arise when I trash a post. I want the associated comments to also be affected, and have one point reduced.
This function: http://de.wpseek.com/wp_trash_post_comments/ seems to be the culprit. So I think the best solution is to either somehow force the "post_comments" to be sent into the actual trash bin, or somehow incorporate an action to the above function to also remove a point when trashing "post_comments". (it would be important that there is no conflict with trash_comment, so the action somehow doesn't get called twice, and reduces two point for one comment being trashed).