This is now a GUI available for the hard to find Unity 2D gconf settings.
Enable Compiz, autohide or always set the launcher to show and mount your volumes and devices.
Unity 2D with Compiz? Now you can have the eye candy too!
More here with download link:
www.omgubuntu.co.uk/2011/04/ubuntu-unity-2d-tweaking-tool-lets-you-adjust-the-launcher-dash-enabl
Tool image:
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