Hello, My macbook pro is having some keyboard issues. I have the 2.16 ghz 1gb ram 100gb Hd model from a few years ago with fully backlit keyboard. The problem started a while ago some keys just stop responding and I didnt know why I sitll dont know why. My keyboard backlight still works fine and there are no issues with that part. Computer performance is fine as well. I am currently at 10.5.6 I believe, so would anyone know how to resolve this problem. I cant afford a new mac at this time and would like to fix this one.