[ubuntu] Can't click outside Unity sidebar (Until i log out and in again)

view story

http://ubuntuforums.org – Each time I boot up Ubuntu I can only click the icons in the sidebar and topbar, not the windows on the desktop. If I hit CTRL + ALT + Delete and log out using keyboard controls, everything works as it's supposed to when I log in again. I'm on Ubuntu 12.10, by the way. I tried updating everything and installing proprietary graphics drivers to no avail. (Hardware)