Rawhide booting troubles (plymouthd)

With the latest rawhide, I get:

could not start boot splash: No such device
/bin/plymouthd: symbol lookup error: /bin/plymouthd: undefined symbol:
ply_answer_new

I can still boot if I select "Fedora-Base" or another older entry from
the grub screen. In fact, there are the following entries in
grub.conf:

title Fedora (2.6.27-0.382.rc8.git4.fc10.i686)
	root (hd0,0)
	kernel /vmlinuz-2.6.27-0.382.rc8.git4.fc10.i686 ro
root=/dev/protee_vg/root_lv rhgb quiet
	initrd /initrd-2.6.27-0.382.rc8.git4.fc10.i686.img
title Fedora (2.6.27-0.352.rc7.git1.fc10.i686)
	root (hd0,0)
	kernel /vmlinuz-2.6.27-0.352.rc7.git1.fc10.i686 ro
root=UUID=5956dd1c-1eab-4487-91ca-e4c3bbc0fee6 rhgb quiet
	initrd /initrd-2.6.27-0.352.rc7.git1.fc10.i686.img
title Fedora-base (2.6.27-0.352.rc7.git1.fc10.i686)
	root (hd0,0)
	kernel /vmlinuz-2.6.27-0.352.rc7.git1.fc10.i686 ro
root=UUID=5956dd1c-1eab-4487-91ca-e4c3bbc0fee6 rhgb quiet
	initrd /initrd-2.6.27-0.352.rc7.git1.fc10.i686.img

If it helps, I installed 10-Beta and upgraded in place to rawhide.
Replacing root=/dev/protee_vg/root_lv with the UUID as in earlier
entries doesn't make any difference.