I have just upgraded ubuntu and restarted. The problem is that when ubuntu started the cursor was no more displayed. I know that it is there because when I pass over a link it is underlined or when I pass over the launch bar it is shown the tool tip with the name of the application. The only thing that misses is the cursor. I have already tried the solution described in this page but with no result. How can I show the cursor, or if it is not possible how can I restore the pc at the moment before the upgrade?
I'm working on ubuntu 13.10.
Update: If I open the control panel(I search it from the dashboard), the cursor appears, but I have to do it every time I restart ubuntu. Moreover the window of the control panel is as in the image(Last time there were not the background green). Control Panel window is not the only program with the window distorted, there it also nautilus.