Disable overlay Scrollbars in Unity (Ubuntu 12.10)

 Disable overlay Scrollbars:
You can disable overlay scrollbars, if you don't like that.

Enter following command in terminal to disable overlay scrollbar:

• gsettings set com.canonical.desktop.interface scrollbar-mode normal

If you want to get back overlay bar, enter following command:

• gsettings reset com.canonical.desktop.interface scrollbar-mode

http://www.noobslab.com/2012/10/important-thingstweaks-to-do-after.html