Is there a way to catch the Search key so that the Google Voice Search dialog doesn't appear?

Question

I'm aware that the home key cannot be caught, and I'm worried that a long-press on the Search key is another "Android-OS protected" key press. Just for testing, I tried to catch all keys with this code within my Activity, but it does not stop the Google Voice Search dialog from being triggered.

@Override
public boolean dispatchKeyEvent(KeyEvent event)
{
    return true;
}

Edit: I tested this code on the Nexus One, and it successfully blocks the key event on that phone, but I still have this problem on the Droid 2. Both are running Froyo 2.2