As explained in bug 425156, gksu is dead and should be replaced by direct polkit usage when needed (as was done with gparted). Thanks
Fixed +*ufw-frontends-0.3.2-r1 (15 Feb 2014) + + 15 Feb 2014; Markos Chandras <hwoarang@gentoo.org> + +files/org.gentoo.pkexec.ufw-gtk.policy, +ufw-frontends-0.3.2-r1.ebuild, + metadata.xml: + Apply patch to move away from gksu and switch to distutils-r1. Remove old + ebuild. Patch by Sławomir Nizio <slawomir.nizio@sabayon.org>. Bug #486450 +