[arch-general] udev and/or device-mapper problem

[Hussam Al-Tayeb]

I updated to udev, cryptsetup and device mapper from testing the
installed kernel 2.6.32.6 and rebooted.
now /dev/mapper/root and /dev/dm-0 are not there but /etc/mtab
mentions /dev/mapper/root 
/dev/mapper/home and /dev/dm-1 exist
The computer boots till the fsck part then stops because there is
no /dev/mapper/root to fsck.
I'm trying not to touch any libpng/libjpeg stuff in testing but non of
those messes up booting anyway.

After fsck fails, it dropped me to a shell. I downgraded udev and
device-mapper, recreated the kernel image and I can boot now.

Any ideas?