Originally Posted by Sazar
You can choose to auto-hide the taskbar but not sure about making it thinner.
Also, to turn Aero Peek off, you can disable it from your properties for your taskbar/start menu.
Right-click on your windows start thinger and then select properties and uncheck Aero Peek. Now, I could also completely be misunderstanding you
I just tried turning off the Aero Peek but it doesn't effect the minimized windows preview
Maybe you can't turn it off yet.