a fix for the squishy mouse button/unresonsive mouse button
After being annoyed by the macbook mouse button being very "squishy" and unresponsive in certain areas, and sometimes not registering a click at all, I decided to take a closer look and I found a quick and simple way to fix the issue.. (this might not work for everyone, but it worked very well for me)
If you remove the battery, and inside the battery compartment you look at the metal part underneath the mouse button, you'll notice a small round pushed out part in the metal... if you push on this metal section a little bit you'll notice that the clicker responds differently and isn't as squishy. So what I found was if you take a tiny piece of paper and fold it a bunch of times so it is small enough to fit just over that round metal section, you can put it over the round section in the metal and put the battery back on and it will keep a constant pressure on the metal, thus making the "squishy" feel of the mouse button go away almost completely.
The trick is getting the right thickness of paper depending on how many time you fold it to fit it onto the circle metal part, if it is too think it can make the problem worse, and if its too thin, it wont push enough and wont help at all.
I hope this helps for anyone having the same problem with the mouse button, from day 1 my macbook has had this problem, and I was glad to find such a simple fix.
http://img53.imageshack.us/my.php?image=button8kx.jpg
Macbook Mac OS X (10.4.6)