I'm having issue with the unity bar auto-hide feature. With 11.10 the auto-hide feature was enabled and worked fine. Now, with 12.04 if I turn on the auto-hide feature the unity bar disappears and does not return even when I move my mouse to the left. This occurs even when all windows are minimized and i's just on the desktop. The only way to show the unity bar is to turn off the auto-hide feature. This is a little irritating, any help you all can provide will be greatly appreciated.