Description of problem: The gtkhtml2-2.6.3 as available in the development version of fedora has a number of critical bugs, for example: http://bugzilla.gnome.org/show_bug.cgi?id=306746 http://bugzilla.gnome.org/show_bug.cgi?id=316475 Please update to most recent 2.11.0 (not that it's perfect but at least it is better).
See also http://bugzilla.gnome.org/show_bug.cgi?id=318192