. ">=sys-fs/udev-187 required by (sys-fs/udev-init-scripts-16::gentoo, installed) This your misconception: You already have an unstable~ @system, which is not supported to be downgraded again. ulenrich ... no, this is your misconception, @system is a set, and udev is a package, it is quite possible to have every package in @system stable, and yet have keyworded udev, and udev-init-scripts, and so have" . . .