GLX problems with Ubuntu Oneric 11.10

Image via CrunchBase

This procedure resulted in a screwed up machine. So don't think of following it, until this comment is gone! (Thanks Kon)
Here is the reference:
http://www.noobslab.com/2011/09/nvidia-drivers-for-ubuntu-1110-oneiric.html

I've consolidated this summary:
To install/Update Nvidia card drivers open Terminal (Press Alt+F2 and type: gnome-terminal) and copy the following commands in the terminal:

sudo apt-add-repository ppa:ubuntu-x-swat/x-updates
sudo apt-get update
sudo apt-get install nvidia-current

Then

Image via Wikipedia

sudo nvidia-xconfig

To set things up.

When installation complete restart your PC. Now to check the installation is successful PressWindow/Super key and type: nvidia x server settings and open it.




glxinfo

If it's not installed, you have to first install mesa-utils. In order to do this type in the terminal:
sudo apt-get install mesa-utils


Now with glxinfo
1. direct rendering: if it says Yes, then you're fine
2. OpenGL: if it mentions your graphics card manufacturar, e.g. Nvidia, then the system is using the vendor's drivers. If it says something like "Mesa" etc., then the system uses an open source driver. Mesa utils also does all the OpenGL stuff.