plymouth-0.8.0-0.2009.29.09.9.fc12 Boot F12 on a system not capable of KMS (like kvm). The blue text progress bar appears for a split second, but the screen goes to black with a blinking cursor. Upon hitting ESC the user sees that they need to type the passphrase to unlock encrypted root.
*** This bug has been marked as a duplicate of bug 527426 ***