[ozma]

I think I figured out why. At the top of each forum page they show (1st page out of Xnumber) and you can jump to any of those pages by clicking on the number. Swap meet has by far the most number of pages, so it's set up so you can click individually on all 66 pages...which is what make the width...which means that as bhuz grows, if this isn't corrected, all front forum page will get wider and wider.