As Ubuntu is switching to unity in 11.04 it seemed reasonable to try it on my 10.10 desktop. Unfortunately, when I launch it I see the icons down the left-hand side but the rest of the unity interface if obscured by any other windows I have open.
For example, when I click the Applications icon in unity if I have another window open it doesn't seem to do anything until I minimize the active window revealing the application list in the background. It's the same for the menu that appear when I right-click on on icon.
What could be causing this and how do I fix it?