The top "Display Previous" doesn't seem to work the same as the bottom "Display Previous". I used the top one to select 1 week, and it still gives me all topics. When I do the same on the bottom one, it works fine. :?
That is strange...for me the top setting always does what the bottom setting does. So if my bottom setting is set to 1 week and I press go, then I see 1 week worth of topics. If I then go to the top selection and set it to 1 day and press go, the selection box changes back to 1 week and will show me 1 weeks worth of topics. If I then go back down to the bottom selection and change it to 1 day and press go, I get 1 day.