A change to how Sphider does searches was very recently implemented. It was found, however, that everything worked fine, PROVIDED all searches yielded results! If a search should not have any valid results, a message saying “The search for [search] yielded no documents” is supposed to be displayed. Instead, such a search actually presented the results from the last successful search! NOT GOOD!
It was found that session variables were not being cleared in the event a search yielded no results. That has been corrected.