Graphical glitches on text?

[kenmore]

I'm getting graphical glitches on text, and even some icons within menus, like this:
www.dropbox.com/s/1d6jt0qs6g5nf5r/glitches.png

It happens seemingly randomly in everything from Terminal to Chrome.

I'm on Ubuntu 12.10.

I think it might have something to do with my graphics drivers but I don't know if/how to update them (I'm new to Linux).
My graphics card is an NVIDIA GTX 570.

Thanks.

[amirali1982]

I'm having the same glitch issues as shown in the image. Let me know if you have found the solution yet?