Right. I think notifications are sorted by age when the person first replies. But if you reply back and then they reply back, it looks like it continues to sort by the first reply. I might not be right about that, so I'll wait for mk to tell us also. But it does seem like the second reply doesn't sort to the top. If that's the case, I'm wondering how to find the second (or third, etc.) reply. Edit: I can see a case where that's not true in my notifications. I always thought that the orange notification was for a comment that was buried, but perhaps not. Then maybe that goes back to your question about the notification not clearing properly? 2nd edit: steve's reply showed the issue. When he replied to me below, the reply did not bump to the top of my notifications. I would not have found it if I hadn't read through these comments again.