The gnome 2.14.2 ebuild requires gedit >= 2.14.3 but gedit 2.14.3 has been masked out as part of the gnome 2.16 testing process. This is a mistake and it breaks the last stable gnome ebuild.
Erm, no? # grep app-editors/gedit /usr/portage/profiles/package.mask >=app-editors/gedit-2.16.0
Awww crap, it was in my local package.mask. Sorry.