See [[clear recent history]] Make sure you are not already [[private browsing]] mode, and click on the ''[]details'' box to display the list of option details. If the above suggestion does not help then it may be necessary to start looking for faults including checking for interfering add-ons, and (this obviously resets some settings you may loose changes you have made} re-setting toolbars and controls. * see [[The bookmarks and history system will not be functional]]