Locking of a post after 4 edits does not seem to be automatic.
When you manage to delete a post (other than the first one) you get this message.XXXXXXFor some reason there are two Test X
Cannot seems to be able to delete first post, although error message is misleading.
"Sorry, but you may not delete posts that have been replied to."
Should surely say "You cannot delete first post in a thread".