Just a rehash on my proceedure... I always burn the entire session and close the CD. I always verify the data is there...I don't open every file, but I test in on the system used for burning, and on another system. I'm not sure what kind of CDs the bad ones are..I have printed labels on them, (think they are Imation),....I've also had corrupted files on different CDs...not just totally bad CDs as this one is...That file corruption may be a bad burn ???..those files are history... I have a bunch of Memorex that all seem fine. My current stack are Imation...I have had trouble with them in the past, but this bunch seem to be ok...no coasters...in fact, since using the Winxp software for burning, I have had no coasters during a burn...but it is all auto, I'm not even sure what speed its recording at...it just works. Also have changed from sharpie to markers labeled for CD use..not sure if it matters, but there are articles saying the Sharpie ink and other permenant markers seeps into the recording layer... So , once again, as with all computing experiences, your mileage may vary... I'm using a hard drive for backup now, but am also burning CDs...hopefully I can afford a DVD or even tape drive someday. Aren't the tapes environmentally challenged as well? I would think they would be more vulnerable than CDs.

Humankind has not woven the web of life. We are but one thread within it.
Whatever we do to the web, we do to ourselves. All things are bound together.
All things connect......Chief Seattle, 1854