Intel slipup
One of the fairly maddening things about the Intel-based Macs is the software that won't run on them. No, I'm not talking about software that runs under Rosetta, or even "Classic" apps. I'm talking about software that simply doesn't work.
Particular offenders include a few operating system preferences that are designed to support additional hardware, like pen tablets and mice, that simply don't work. When you click on them, you're told that a newer version is needed and that you have to contact the manufacturer.
So, as far as my nifty seven-button 1600 DPI optical mouse is concerned, I'm SOL until the manufacturer gets around to updating the driver as a universal binary, I guess.
Humph.