When I am using Unity 3D, clicking on the systray doesn't work. For example, in the picture bellow:
if I want to click on the Pidgin, Ubuntu One, Synapse,... icon, it doesn't work at all, meaning that nothing happens. I have to click on the Datetime indicator and after that go with the mouse on the left side until I reach to the desired application.
With Unity 2D this is not happening, everything is OK.
I have used this tutorial to enable the notification area: http://www.webupd8.org/2011/04/how-to-re-enable-notification-area.html