OK, SuperDrive leaving scratched marks on disks, and problems when connecting a USB device are definitely defects/failures that needs to be addressed.
Did these problems developed after sometime?
I've only had my i7 since Dec.18, and have had no problems so far.
How long time did it take before you noticed these failures?
The SuperDrive defect was on day one when I played one of my Scrubs DVD's... The USB thing the first day, when I was going to transfer some files to my new Mac.
I got my iMac 06-11-2009