Concerning app-emulation/bochs/bochs-1.4.ebuild: "-enable-slowdown" should be spelled with one more dash... Please consider adding "--idle-hack" (i386 only, I think) which will make Bochs much more workstation-friendly.
I've made an ebuild for the new bochs-1.4.1 which fixes these 2 issues and moves /usr/bochs to /usr/lib/bochs (better fhs compliance).