I have a new unibody MacBook. I recently discovered odd behavior from the SuperDrive. I had successfully ripped quite a few discs, importing music into iTunes, when I tried to insert Three Days Grace self-titled album. The SuperDrive made some weird clunking noises and proceeded to eject the disc after roughly 10-15 seconds. I thought that the CD was messed up, so I tried it in my older MacBook Pro, and to my surprise, it read it just fine. I tried other CDs and the new MacBook worked just fine. I finally got to importing AC/DC Back in Black, and again, the SuperDrive made the same weird noises and ejected. However, it worked in the old MacBook Pro though. This occurred for a select group of other CDs, but not all. I took the MacBook to a "Genius" today to see about getting the drive replaced. I was able to replicate the problem for him. He took the CD and it worked in an older MacBook, but then he tried it in 4 unibody MacBooks and all ejected the discs. He said that since they would have just replaced it with the same optical drive, that it would pointless since all of the new ones were spitting the discs out. He instead sent in a report to engineering to see if they could figure things out. Anyone have issues like this? I find it very weird that most CDs worked but some consistently did not, yet would work in older MacBooks. This seems to point to some problem in the new MacBooks or something.