Okay, what I think we've proved:
1) Emmi and bamos definitely can't read.
2a) While everyone replies to only the original post the board does not fuck up, but if a number of posts were made at the same time (to the second), the first proper reply to someone fucks it totally.
-- OR --
2b) Replies at the same time (to the second) cause the board to fuck up but it takes a few minutes to show up that way.