Is it just me, or are the boards not updating the way they should? I'm not sure I know the right term for it, but the threads aren't moving up to the top when there's a new post the way they usually do.....
Check that your sort order is set to last post rather than date started. On the board index, above the right hand column in the list of posts is the setting.
That was it.....!!!! I don't know how that setting got changed for me, I never even noticed those buttons before. But as soon as I changed it everything went back to normal.