Deleted members PM's are still in the db, both on their side and also on the other party side. If someone is deleted from the system, my feeling is that it should delete both sides of the equasion, those who have PM's to or from them in history and all the users PM's as well.
i found this out because i got the PM view plugin and it puts the text "deleted user" in the view report if the user is not found.
Aliia can you please also have this post confirmed either by you or another team member.. http://www.oxwall.org/forum/topic/12831 I have a xfer comming up tomorrow and i need make sure i got that correct... thanks