Even though it is strongly discouraged, some customer may want to install an old version of HistoryKill. The current version of HistoryKill is 2010 and it fixes many issues w/ HistoryKill 2009 locating possible new history data to kill in the new versions of IE 8.0, Firefox 3.0, Chrome 2.0, XP SP3, Vista SP2, and Win7 RC1.