Different wallpapers on each Work space. 12.04...any suggestions? I recently installed ubuntu 12.04 on a new laptop, but i can't get different wallpapers on each different work space as I did on 11.10. I used compiz like in 11.10 but cant figure this one out. Is the capabilities for this disabled in 12.04. Different wallpapers was brought more tang to my laptop. any help would be great!