deesee wrote: "I know this won't help you, but I've just purchased one of the new Macbook Pro's and got Parallels 3.0. I have noticed very bizarre mouse behavior and very slow performance, but I'm using AutoCAD 2007." === Do you have any mouse enhancements running? USB Overdrive, Mighty Mouse, or others? If so, a simple tweak in those utilities may fix your anomalies.