Q: What are the ASC files that accompany the CD ISO images and MD5 files?

A: The files with the .asc extension are PGP-signed messages that contain the md5sum used for verifying the ISO CD images. With this you can be sure the ISO image and accompanying MD5 file are genuine, because the .asc file containing the MD5 is signed with Klaus Knopper's PGP key. This could only be compromised if someone got hold of the secret key used to sign the message. To verify the file, you need to import PGP key ID 0xBA8F038D from your favorite keyserver, then in Linux you can type "gpg --verify KNOPPIX_Vxxxxxxxxxxxxxxxxx.iso.md5.asc". Then you must check that the MD5 checksum in the .asc file is the same that the MD5 checksum in the .md5 file.

If you want to verify the signed md5 file and the ISO file in one step, you can type:
That means absolutly nothing to me

Can you give me some hints? Like do you thing the iso is messed up? BC Nero 5 did give me a funny pop up when I went to burn the ISO. Would you recomend I Download a new ISO?