Firefox About:Config Tips

http://kb.mozillazine.org/About:config_Entries
  * In Linux, changed dom. disable_window_open_feature.personalbar (others, too)

http://www.techrepublic.com/blog/10-things/10-handy-firefox-aboutconfig-hacks/

http://www.maketecheasier.com/28-coolest-firefox-aboutconfig-tricks/
  * In Linux, changed browser.urlbar.clickSelectsAll to match Windows behavior (now True)
  * In Linux, changed browser.urlbar.doubleClickSelectsAll to match Windows behavior (now False)
  * In Linux, changed security.dialog_enable_delay to 0 (no delay installing add-ons)