I did a fresh install of Ubuntu 12.10 and installed nVidia driver 'current'. But on restart, the launcher icons went missing. The screen size reduced to 1024x768. I am able to right click on the blank desktop and create a folder and an empty document, but how do I launch applications to fix this ?
Try to type Alt + F2, search for "Software sources" go to "Additional drivers" tab and select driver for your nVidia. Restart computer and may work. Worked for me.