For about 4 months my CD/DVD drive on my 17-inch MacBook Pro rattles. It's quite loud and it happens if: - I insert a CD into the drive; it rattles until it has stopped being spun. - I insert a DVD into the drive; it rattles until I load DVD Player. - I want to burn a CD or DVD; the rattling is very loud. It almost sounds like the CD/DVD is rubbing up against something, but that can't be - none of the CD/DVDs have any evidence of damage. I believe something is bent or mangled inside the drive and has come loose or something. I have a backup iMac to burn my CD/DVDs - so this problem is not urgent at this time.