I unplugged it and took the sdcard out and replaced /boot/kernel.img with an ancient kernel.img.
The RPI would then boot and I downgraded linux-raspberrypi-latest to 3.10.4-1, which works for me.
What was changed? Anyone else with problems..?

solved by updating to linux-raspberrypi-latest 3.10.6-2 (Linux pi 3.10.7-2-ARCH+)