Lost function of button 3 and 4 on Mighty Mouse

Question

For the last few months, I've used a Logitech trackball on my iMac. Recently, I needed to plug the Mighty Mouse back. Buttons 3 and 4 (dashboard, and expose all windows) don't work. I've tried:
1) creating a new user (admin and normal)
2) double checking the keyboard/mouse settings
3) resetting the PRAM
and nothing works. Any idea what could be causing this?

Answer 1

Hello,
This seems to be a frequent complaint from people who have installed the drivers for 3rd-party mice.
See if there is a method to uninstall the driver that came with your other mouse.
Unfortunately, there may not be a way to remove those drivers and revert to the standard built-in drivers.
As a means of experimenting, I would try downloading the latest version of the OS 10.4.x "Combo" update for your computer.
For the Intel computers, this would be:
http://www.apple.com/support/downloads/macosxupdate1047combointel.html
For the PowerPC computers, this would be:
http://www.apple.com/support/downloads/macosxupdate1047comboppc.html
It is entirely possible that if you have the mighty mouse installed and connected when you re-install these updates, that it may over-write the 3rd-party drivers and re-enable the factory drivers (which is what you need).
There is a method to revert to the factory supplied driver. The questionable, and technical, route:
You'll find the directions in the last post at:
http://forums.macnn.com/archive/index.php/t-267713.html
If none of that works, then about all I could suggest is re-installing OS X and avoiding the Installation of any mouse drivers (including those that come with the Mighty Mouse - they are unnecessary and add problems).
I hope this helps.
Let us know if you have other questions.
P.S., if you'd like, go ahead and click the "Helpful" or "Solved" buttons on any of the posts / replies above if you feel they were helpful or adequately answered your question.