Title was weird because this is hard to describe.
When looking at the Hearthstone subforum, it says that thread and that guy was the last post, at that time.
Then when you click in, the actual last post was in a different thread, with a different user, but the same time.
Quick check it out before someone else posts in the HS subforum. (I logged out (well, no that sounds inconvenient. I just checked MMO-C in a private window) and the problem still exists, so it's not just my account.)