When I log on to KKF, I click the "New Posts" button (or go directly to that link). It doesn't work properly.
Instead of showing only new posts since my last visit, "New Posts" gives me pages and pages of new and old posts, some of which are several days old. That makes the "new posts" button pretty much unless. IMHO, it should show only comments that have been added since my last visit, which is the way it works on other sites using the vBulletin software.