Arch users have lived without the last good known kernel so far and without an -lts kernel until recently. IMHO it is a lot more advisable to have an install cd/usb, or even better, a custom install in some external media that can be used to boot the system in case something goes wrong or in case of emergency. Then you can just chroot into the broken install and fix the problem or tell pacman where the root and cache are located and fix things. -- Mauro Santos
