I have a ton myself...and its been happening quite a bit..go to use them, and they don't work. It is damn scary and just too much a bummer What I usually do is save downloads to a specific directory...then at some point, I save to CD about 600-650meg....depending of course... One of the things I've noticed is that CDs burned with a specific program and specific system may not work on another system... I used to use Easy CD..then Nero for a bit... Right now I'm using the built in Win XP CDburning software..I think its based on the Roxio software...so far the new ones still work, but its been a year.... I'm going to check all of them so I can be disappointed all at once...better a big hit than having it happen every other week or something...at least if I'm totally POd tonight or tomorrow, it may settly out in a couple of days :)

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