Linear and fast mouse speed in OS X Lion. Possible? I've got a 27" display and, at present, I need to use the whole mousepad just to get across the screen.

How can i make my mouse (Logitech MX 400) movement linear AND fast? How do i speed up the mouse with NO acceleration?
A recently released app called SmoothMouse will do exactly what you want, and (in my opinion) works much better than the other alternative mouse drivers.  It's free and available here: http://smoothmouse.com

On top of offering options for both linear and Windows-like acceleration curves, it also removes the 32ms of lag that OSX typically imposes on mouse cursors.  To me, this is just as essential as changing the acceleration.

This thing is really pretty close to the holy grail - great-feeling mouse movement on OSX.