bonch writes: Firefox 13 beta has added a "Reset Firefox" button that migrates bookmarks, cookies, and other data to a new profile while deleting the old one. Add-ons and tabs do not survive the transition, though they may be supported in a future update. The feature is intended to avoid complicated troubleshooting steps and allow users to start over with a fresh installation of Firefox simply by visiting the Help menu.
"For a male and female to live continuously together is... biologically
speaking, an extremely unnatural condition."
-- Robert Briffault