Sorry if this is a dumb question

but I figured it was worth putting here.
I thought the little arrow button next to a post title in the Forum Index was supposed to be the equiavalent to the "skip to first unread" link that is next to post titles in the individual subforums.
However, that arrow is now taking me to the latest post in the thread.
Maybe I just misunderstood it up to this time! Seems like it would be more useful for it to "skip to first unread" instead of the latest post, though.