The other day I was looking at the chat box *sigh* (it must've been a slow day), and the damn thing wouldn't stand still. It jumps down to the most recent message every $x seconds. Why?
I can understand a need for it to be updated as "chat" occurs. But even so, if the user is making the effort to scroll up, perhaps the server should acknowledge this, and not slam them back down to Earth quite so often.