Bizarre problem with data burnt to dvds

[FiremanJoe]

I've burnt backup dvds of music. Recently I copied the music back onto a HD - some of the .mp3s are messed up. What was once a track from The Black Mages is now 117 minutes long and is partly Black Mages, partly Hitchhiker's Guide to the Galaxy Audiobook.
Any idea why this is, and if there's a way to fix it?

[Old Man Time]

I've burnt backup dvds of music. Recently I copied the music back onto a HD - some of the .mp3s are messed up. What was once a track from The Black Mages is now 117 minutes long and is partly Black Mages, partly Hitchhiker's Guide to the Galaxy Audiobook.
Any idea why this is, and if there's a way to fix it?

No idea what it is, though I'm a little concerned because I burnt a bunch of dvd's with music on them - 11 to be exact. I hope my files are ok...

[EdgeCrusher]

Are you trying to play them off of the dvdr, or copying them back to your HD?

[Effef]

How old are they? If they are cheap brand dvds and are more than a couple years old, you could be the victim of adhesive rot in your DVDs.

[FiremanJoe]

This occurs once the data's been copied back to the HD.
I've burnt almost 30 dvds now; only one or two have had the problem. I'm not sure if the 'adhesive rot' thing is it.. cos they're not that old, and there's no visible damage on the disc.

[EdgeCrusher]

Most of the time with the "rot" on discs they look pitted. I had a bunch of cd-rs do that over the last 5 years or so.

[FiremanJoe]

Hmm, well I can't see anything like that. At worst, there are some minor scratches.