"Mark as read" not working?

I miss the simple button from the old forum. I used to read the threads I was interested in and then mark the rest as read. The new multi-step process (in "participate") needed to clear the "new"s from threads you don't wish to read doesn't work on my computer so far... Sometimes "upgrades" aren't.


Edit: Oops, never mind. Had the wrong button. It was still easier before though, hehe. And now I'm curious what the participate button is for...