I'm using three display setup and Xubuntu 13.10.
The useful region of desktops are limited. I can't place icons beyond some region in the center of the screen.
Please see the screenshot of my primary display:
For example I can't move Firefox icon higher than it is now. And I can't move PhpStorm icon lower that it is now.
Here's my NVidia configuration:
Why is that? How to fix that?