Changing the Ubuntu taskbar hide speed
When using Ubuntu, you can set the taskbar to AutoHide so that it will disappear until you hover over it. However, a common complaint is that the taskbar hides and unhides too slowly. Here is how to fix that problem.
First, open the Terminal by going to Applications > Accessories > Terminal.
Next, type gconf-editor and press Enter.
In the Configuration Editor, navigate to apps > panel > toplevels > bottom_panel_screen0.
Right-click in the window on the right, and click New Key.
In the input for Name, type in animation_speed. In the input for Type, select String. In the input for Value, put fast.
Now click Ok and you are done! You have just set a faster animation speed for the bottom taskbar. You can do the same for the top if you select top_panel_screen0 on the left.