When you log on, all threads with new, unread messages have a bold title. After you've read them, they used to switch to un-bolded font. For the last week or so, this no longer happens.
My newest problem, experienced over the last few days is when I try to use the 'view first unread message' button within a thread, the pointers are screwed up and I am forced to wade through a bunch of messages I've already seen.
For what it's worth, I was on the other day and somehow was presented with the new page layout and it looked beautiful. Only got to see it for a second because I hit the back button before I realized what was there, but it looked very clean.