Description of problem: If you have an encrypted root and reboot your machine, it used to stop at the prompt for password box ... now this dialog goes away after a set amount of time and systemd prints a message that looks a _lot_ like your drive/installation is completely broken and needs rescuing/reinstalling. There is also no way out of this (that I could see) other than to hard powercycle the machine.
This is a known and well documented issue. https://fedoraproject.org/wiki/Common_F18_bugs#encrypt-timeout-rescue *** This bug has been marked as a duplicate of bug 868421 ***