I noticed my 15" MBP's SuperDirve makes louder noise when it is taking in/ejecting DVD/CD, compared to my other Macs (which are PBs and iBook). The sound of motor (which sucks in and ejects disks) seems to make noticeably louder noise. Once the disk is in, there is no unusual noise. Does your MBP's Super Drive make the louder noise like mine? I know the motor makes noise but this MBP makes louder noise than my PB/iBook's optical drive.