[QUOTE=Stefan1971HH;2638989]Thanks for all replies!
I’ve just been bored enough to do another scan of this bad Pioneer burn.
Apparently the peaks vary from the three earlier scans of it.
In particular the ca. 460 LDC peak in the beginning is gone, which changes the scale.
Is this normal, and if not, what does it say? [/QUOTE]
Keep in mind that a speck of dust on the disc can generate a spike on a quality scan. Generally speaking, single spikes of that magnitude are not significant, and may not be consistent from scan to scan. Larger areas of errors on the disc can indicate a media quality problem or a burner’s burn strategy problem. They also create trouble with read-back on some slim-type drives used in set-top players.
This is an example of a disc that one might wish to avoid.
That first burn of yours is far from terrible. If a transfer rate test shows no read-back slowdowns, I would not be too worried. As I said, keep an eye on your subsequent burns with this media and burner before you decide that either one might be a problem :).