If your mouse is ever laggy or skips, then it might not be an issue with the mouse itself, it could be the USB port that you have it plugged into.
I can't press more than one button at once on my mouse. (e.g. I can't duck and shoot at the same time in CS. If I'm ducking and I shoot, I stand up.)<P>Logitech Mouseman Plus, plugged into PS/2 port, ...
OS updates seeded to developers Mac OS X Update v10.1.1 5M26 and Limelight (OS 9) Update 1 5b7c2 have been seeded to developers. Pro mouse problems? This MacFixIt Forums thread (Optical mouse glitch) ...