This applies to the touch pad on any unibody, but i have the 13" pro. I'm a tap-to-click user btw, and there are the most fundamental usability flaws with the touch pad that I can't get around! 1. .25 second lag when using tap to click compared to press to click. 2. Double-tap-drag-drop has a .5 second delay after you release your finger before it actually registers that you're no longer dragging (giving you drag lock for .5 second) I want to like this computer so much. But when the basic means of manipulating with the computer are slow, all the gigahertz and gigabytes are for nothing.