I am trying to mirror the debian repository.
Here is what happens, when I run my debmirror script:

Mirroring to /package from ftp://anonymous@mirrors.kernel.org//debian/
Arches: amd64
Dist: etch
Sections: main,contrib,non-free,main/debian-installer
Will clean up AFTER mirroring
Pdiff mode:use
Attempting to get lock, this might take 2 minutes before it fails.
Get Release files.
[0%] Keeping: dists/etch/Release
[0%] Keeping: dists/etch/Release.gpg
gpg: Signature made Sun 08 Apr 2007 03:42:00 AM PDT using DSA key ID 6070D3A1
gpg: Can't check signature: public key not found
gpg: Signature made Sun 08 Apr 2007 02:38:40 AM PDT using DSA key ID ADB11277
gpg: Can't check signature: public key not found
Release signature does not verify
Errors:
Release signature does not verify
Failed to download some Release or Release.gpg files!
WARNING: releasing 1 pending lock...

Any help???