ubuntu 10.04 problem: Kernel panic - not syncing

After updating the package lists in Ubuntu 10.04 as well as BIOS (probably),
there is the error messenger when booting from Ubuntu, as follows:
[ 1.901413] Kernel panic - not syncing : VFS: Unable to mount root fs on unknown-block(0,0)

The reason of the problem: it seems like the linux image(or Kernel) file on disk is broken.

The way to solve: (try to recompile the kernel in your system.)
cd /boot/
mkinitramfs -o initrd.img-2.6.34-rc6-custom 2.6.34-rc6-custom
update-grub
reboot the system.

There you go! :)