I upgraded from FC3 to FC4 following the (unofficial) yum upgrade instructions at http://fedoraproject.org/wiki/YumUpgradeFaq which worked very well. But Firefox has lost all its toolbar icons, such as Back, Forward, Reload, etc., and the little "X" for closing the active tab. I can still work by displaying text rather than icons; and by hovering in the vicinity of where the "X" ought to be, I can get the button to highlight and close tabs. Uninstalling and reinstalling FF didn't change anything. Does anyone have any other suggestions? Thanks, Matt