The senior Applecare tech I spoke with, Britt, said that the problem was known to Apple's engineers and they were working on it. When I suggested that a problem written about in the Forums in 2005 was perhaps overdue for a solution, she just repeated what she had already told me. She asked if I could go out and buy some different brands of discs and try them out, create a new account and try it out, and generally do the Edison thing of a thousand novel tests. At that point I just gave up. I did do one experiment using Verbatim instead of Memorex (which is not the Memorex we remember from our youth, an audio company in Mountain View, but rather an overseas firm that bought the name but not the quality control) and discovered that I could burn smaller DVDs (4.7 GB) although not movie-length, which was reassuring a little.
My feeling was that this is Apple's problem and they should be buying all the discs and trying them out, and messing with their software, and seeing what works and what doesn't. How many billions in profits did Apple make last quarter? How many more millions of Macs did they sell? Why the **** then should we the customers be doing their usability and QA testing for them? I used to be an Apple partisan; now I'm just a participant. Give me a fit alternative and I might very well be a poor sport and leave for it. We, the customers who make Apple rich, deserve better treatment. No fault of Britt's, she was just trying to make sense of a crazy situation.