This is a great scan. Your curve for PIE is nice an even and very low. Also the total number of errors is very low. Your PIFs are all below 2 which is great (you want below 4) and the total number is low. The only improvement would be PIF total below 250 or so, but that would be guilding the lilly.
Use this as a basis for comparison. This is what you want to see. Also, you might want to upgrade the firmware as they fixed a few significant bugs, particularly in CD burning.