Any way of disabling mouse zoom in editor in Mac OS X?

Hi,

I'm using IDEA version 9.0.2 on Snow Leopard with a magic mouse. This mouse is prone to trigger mousewheel events unintentionally, so half the time when I use Cmd + Click to go to a declaration the editor scrolls in or out. Any way of disabling this? The closest thing I could find was in the keymap section, but there was no option for mouse events.

Cheers