>This thread does not show up for me in the top frame at all. I see the messages to me in my unread mailbox but not the upper treeview. Is this because of the thread move or a bug in the treeview construction? In chatter right now I only see 1 message in the Time To Move On thread and 7 messages in the VFP Marketing Plan thread.

Maybe the icon toolbar stopped refreshing. This is a known bug in IE where the META REFRESH tag stops working after a while. You just have to right click Refresh in that toolbar to restart it. We had that with the other design as well.