I'm running the 2.4Ghz 2009 Macbook Pro. I use the two finger touch to right click most of time time, but this model has a 9600gt so I game on it too.
I also have the secondary click enabled as well so I can use the bottom of the trackpad as a standard left/right click as if it had buttons, but if you use the bottom right to right click, it'll left click before right clicking. So... for some reason no LEFT CLICK DEAD ZONE exists when you enable secondary click in the bottom right.
So imagine you are playing an FPS like HALF-LIFE 2. You try to pick up an object using the bottom right with the gravity gun but it left clicks first and shoots the object your trying to pick up that hits an explosive barrel... BOOM!!
Other times clicking in the far bottom right hand corner doeskin right click at all, just left clicks. Ill sit here CLICK CLICK CLICK CLICK and I just keep left clicking and firing my weapons primary fire over and over. It works like this in any game ive played FPS or not, and it does it inside the desktop as well not just games.
On top of all that, its overly sensitive like the other guy said above me, when I'm just trying to track the mouse it'll click and or drag.
It works PERFECT under OSX, no issues at all. It is definitely a driver issue that needs fixed.