Yes it is. It is one of several packages that you get when you install the
Nvidia driver. For some reason the kernel update required a graphics driver
update, but did not install all of the packages. I am not sure if it was a
bad script that they have since fixed or it is something that happened due
to an interruption, etc. If the process was interrupted, it wasn't something
that I could detect. I did not have to do a dpkg fix to complete the
installation process.

In any event, if it ever happens to you, you have to work from the
commandline to fix it, using apt-get. If you don't get it right then you can
compound your difficulties with doing a hard boot. Then you get two sorts of
errors. The file system could not mount due to a problem with my swap
partition, that I still have not got around to fixing. Fsck could not fix
it, so I had to edit it out of fstab to bypass the file system check on the
swap partition and the subsequent failure. Once I solved that then I could
boot into the recovery console to fix the graphics issue.

Next I will fix fstab and see if the swap partition is working. Running
K/Ubuntu without a swap drive is not a problem. It actually seems faster. I
have 3 GBs of RAM.

Isn't Linux fun?