Fedora X86/64bit :: F12 Kernel Upgrade Failed - Eclipsed?

The -162 kernel upgrade just released failed to boot in my x86-64 system. Additionally, both previous kernels failed in (probably) the same way. The progress icon proceeded all the way to its 'f' image, and then hung. I touched escape key, and found several disturbing messages among a dozen or so lines --

mdadm: No arrays found in config file or automatically. A dynamic linking error occurred: /lib64/multipath/libcheckdirectio.so: no such file or directory awk: cmd. line:1: fatal: cannot open file `/etc/inittab` for reading (Invalid Argument). Init: rcS post-stop process (807) terminated with status 2s. I got into rescue mode with my install disk, then looked for libcheckdirectio.so in /mnt/sysimage/lib64 but it was not there. Also, locate -d /mnt/sysimage/mlocate/mlocate.db/libcheckdirectio.so found nothing.

Ran chroot and executed the fakd diagnostic (which I had not seen before) and rebooted. Same problem - although now the screen is telling me SELinux is requiring a targeted policy relabel. My dual-boot-to-vista system has been erratic (requiring fsck several times, and confounding the Vista partition to require file checks), primarily since a large install of Eclipse and multiple plug-ins AFAICR.