The "replies to threads since last visit" etc links have disappeared. This was my main "what's happened since I was last here" link so I'm keen to see it returned!
You can't expand Recent Forum Topics beyond what shows on the front page so with this and the missing thing above it's impossible to see what has happened recently unless only a few things have been posted...
The Profile and Messages menus appear to have drop-downs which are supposed to display when you hover over them... at least, I assume that's what they do as nothing happens in Firefox.
(
edit: ah, figured it out, to get the menu you have to click exactly on the down arrow. That's a terrible piece of UX design, please change it!)
These were all fine when the site launched, I don't know why they have been changed since