Friday, April 18, 2008:
I've been a fan of USB Overdrive for years (I posted a glowing report a few months ago), but as of 10.5.2, this utility no longer works, and the developer is not responding.

It simply doesn't recognize any mouse that we've tried with it. Normally, once you install USB Overdrive and restart your Mac, you can go into its System Pref, and click on any of your mouse's buttons, and the utility will tell you which button that is corresponding to. You can then set up any actions you'd like to that button. However, it's no longer doing this, rendering the program utterly useless.

I'm posting this to make sure others are purchasing this program, at least until they start responding to problems, and come out with an update beyond 10.4.8.