Exact same problem here. I've installed the (correct, supposedly) software on the following systems:
Mac Pro 4x2.66ghz w/ 10.5.8
Mac Pro 8x2.8ghz w/ 10.6.1
Mac Mini 2x1.66ghz w/ 10.6.1 Server
Only the Mac Mini worked properly. On the 10.5.8 machine, I paired the mouse before installing the software update thinking that might be what was needed to get the update to appear in "Software Update
".
On the Mac Mini I downloaded and installed the software first, restarted, and had no problems with the mouse.
On the 10.6.1 Mac Pro I installed the software first, like the Mini, but the software doesn't seem to have worked since I still get the regular mouse control panel in System Preferences.
It's very odd the way the mouse seems to pick and choose which machine to work on. The only thing I can imagine is that it's related to some system plugin or USB device I have installed. While not identical, both Mac Pro systems shared mostly the same setup and accessories. The Mac Mini, however, was a virgin install on a virgin system.
-berylium