GPG problems on Sarge > Etch upgrade

["Chris Andrew" <cjhandrew@gmail.com>]

Hi, all.

I've just installed sarge on a Sparc 32 machine.  I'm doing an upgrade
to Etch, and most of the updates have installed.  Unfortunately, when
it comes to upgrading apt, I get "gpg: key (number)  no valid user
ID's this may be caused by a missing self signature.

I got this error for the rest of the packages, so I just forced it.
Do I need to install another package to update the gpg, so apt can
upgrade?

Any ideas?

Cheers,

Chris.

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