Since installing Ubuntu on my MacBook Pro I have been stuck (when I’m away from my wireless Mighty Mouse which works flawlessly by the way) with clicking F12 to get the context, or right-click, menu. This is very lame. So a couple days ago I took a minute and checked how to at least get CTRL+click working.
To my joy, I found an even better solution in the Ubuntu wiki. You just have to put the following file in /etc/hal/fdi/policy/
To right-click, tap two fingers. Also supported are two finger dragging to scroll as well as a few other things.