AJAX and Memory

Hi--
   I've noticed that on some AJAX heavy pages, Firefox can begin to
consume huge amounts of memory even after I altered the config to cause
it to not cache so much.

   It appears that something in the JS is causing memory to leak. Is
there a way to make the garbage collection more robust or maybe see
exactly what is marked for collection so I could communicate it to the
web developers?

  Thank you all.

--Sean