Okay, basically what happened is I put a CD in the slot of my Macbook Pro Aluminium and shortly afterward I heard a very loud rattling and scraping noise, I tried ejecting the CD a few times and then it came out. What I'm wondering is could I have damaged the CD slot somehow? It seems to work fine but I'm not sure, also every time I switch it on the CD slot makes a loud sound, is it supposed to do this?