I got 300pk stack of Verbatim 16x MCC 004 back in September 2011 and I have been making my way through it burning stuff for backup reasons.
I don't have any burning knowledge (yet)... I pretty much just burnt+verified them at 12x using IMGBurn. Never had a failed verify.
I would like to learn about disc and drive quality testing etc some day but it all seems kind of complicated so I have put it off for a rainy day.
So just now I grabbed a pre-burnt one at random from my box and checked it with Opti Drive Control:
Should I be worried? The red stuff looks kind of ominous, I take it this is a bad burn?