I just got a new macbook a week ago. Everything was peachy until I went to write "New zealand" & realized the capital z did not work but in capslock. I found one thread from so long ago about a guy who had this EXACT same problem but there was no outcome posted. of course I've been on the phone with apple & no amount of troubleshooting got the z going. It also makes that "goink" noise when I try to press it. ANYONE heard of this particular defect or what causes it? Just curious.