Last few days I've been getting some weirdness with threads being marked as read. I'll have caught up on the board, have all threads marked as read, maybe come back on a little later, still fine. Then next time I'm on, all the threads I read are marked as new/unread despite having no new posts.
Not a big deal, just a little strange. Don't know if its the site or if its some cookie weirdness on my end or maybe a cache issue?