I'm sure a few people already know this trick but before installing Logic Studio (or any app for that matter) I highly suggest using disk utility to create master backups of the DVDs... Not only will you have backups of the DVDs incase anything were to happen, but you can have all 9 disk images open at once, so you don't have to keep swapping discs.. It cuts install time from about 3 1/2 hours to 30-45 min. Keep in mind that's off an internal SATA HD... Now if you are running off an iMac or MacBook, MacBook pro, something with limited space... Then you can store it on an external HD..USB, FW, or even eSATA... Even on a USB 2.0 external HD it cuts install down to about an hour/hour & 15. Just a handy trick I thought I'd share for anyone who didn't know.