I found this interesting/on another forum.
5 - 10 minute auditory test, depending how fast you click, but not scored by click speed.
http://www.positscience.com/programs/brainspeed.php
Shockwave will have to update if it hasn't already. Do not install Yahoo toolbar.
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My score, if you choose to accept it:
http://img.photobucket.com/albums/v2...en/brnspd2.png
chart:
http://img.photobucket.com/albums/v2...ken/audspd.jpg