well let me add onemore clue to this mystery. i registered at vb's forums, which are also powered by the same version we have just upgraded to, and found that i did not get this behavior. at least not the back button behavior. after making 2-3 new searches, it continues to bring me back to the most recent one when using the back button. and yes, i confirmed this by watching the change in search id numbers as well as content. refresh still does not seem to work as the previous version did.