@Rakama
First off, that is not the Internet Button; instead, it is a button that when pressed, launces the Browser you have set up in Program Default in Settings. So it is a Browser button.
Second, you said you Replaced the keyboard, but based on your description, it sounds like what you did was plug in an external keyboard -- which would not fix the problem.
My guess is that you have pressed this button A LOT! And as a result, it is now shorting on a frequent basis and acting as if you are pressing it, when you are not. The only "fix" for this, since you can not actually disable the built-in keyboard, would be to have it replaced.
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