Issue with not disconnecting facebook session when logout of drupal session

This isn't really a bug since I see it was intentional but there are issues with this. If a user connects through fbconnect on drupal site then logs out of drupal leaves the computer and someone else logs into drupal on same computer then their facebook session is still alive and when the new person posts a comment on drupal site they can feed to original drupal users facebook wall.

I know its the same as if they walk away from computer without logging out of facebook but without the face book page open people will forget they have a facebook session open and walk away.

Not a problem for me but possibly others might have issues with it so im just bringing it up for debate.