I have had my G4 iBook for about one month now, and already I am noticing that the keys are wearing off! It isn't very bad yet, what what will happen down the line? I would seem that the letters would be a little more resilient. So far, the "S" is about half gone, and the "N" is starting to show wear. Has anyone else encountered this? How bad does it get? Will I have letters on my keys at all after a year of use? Thanks! Samantha