I just encountered this problem tonight for the first time. It is happening both with the AOL browser AND Firefox. I did do housecleaning and wiped out cookies todays so I'm sure that is the culprit but both browsers are set to allow both session cookies and first and third party cookies -- the cookies that control the boards are NOT working as they should. I always have my boards set to display 50 messages at a time and newest first and flat view. If I click flat view and then select newest first it reverts to thread view...I can't have newest first AND flat view. Every time I leave one board and go to the next it reverts to 10 messages displayed and thread view.