[hunchentoot-devel] preventing session-max-time updates

Hello, I am using AJAX requests periodically on each page of my site to update a part of the display. These requests, however, prevent the session from becoming stale. Aside from fiddling with the last-click member of the session objects directly, what is the best way of keeping the periodic AJAX requests while letting unattended sessions become too-old-p? Thanks, Tim S