3.0 Beta 4 has been released on 2012/04/25. Current ebuild works fine.
Thank you for reporting. +*kshutdown-3.0_beta4 (03 Aug 2012) + + 03 Aug 2012; Johannes Huber <johu@gentoo.org> +kshutdown-3.0_beta4.ebuild, + -kshutdown-3.0_beta3.ebuild, kshutdown-2.0.ebuild: + Version bump by Nikos Chantziaras <realnc@gmail.com> wrt bug #429610. Remove + old.