Have you notice that in Windows 7, when you move your mouse over the taskbar shortcut of a running application, it will take about half a second before the taskbar thumbnail appears? A waste of time, isn't it?
So, how to make it faster? A registry hack will work.
* WIN+R and type in regedit to open the registry editor
* Navigate to HKEY_CURRENT_USER\Control Panel\Mouse
* Double click on MouseHoverTime On the right panel
* Modify the value from 400 to 100
* Done

Now restart your computer and see how it works.
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