F18 356 Segmentation fault

I can't get my fedora 18 machine to boot, the sequence seems to stall at the following message:

dracut-initqueue[236]: /sbin/btrfs_finished: line 7: 356 Segmentation fault mount -o ro "$_dev" /tmp > /dev/null s>&1

On the other screen bars(?) that wont finish are:
RSP <ffff88012baef848>

systemd-cryptsetup-generator[385]: Failed to create unit file /run/systemd/generator/systemd-cryptsetup@luks..................

Is there anyone out there that can offer advice on how to repair this?