DVD-R part 2

I am now thinking that this is a bad batch of DVD-R's which has me really worried about any disks that still work. I guess I may have a ticking bomb on my hands.

I sent an E-mail to the manufacturer because it's total bullshit to have 100 or more disks go bad.

I still have no idea how the disk went bad and because of this whole ugly situation I am wondering what the point of DVD burning is if one can't count on it holding.

I need a OS X app that can inspect these disks. So far all I can do is watch my computer spit them out.