Thanks Steve,
I will try the "keyring"
Regards John
----- Original Message Follows -----
> Hi,
>
> Probably don't have the package installed that contains
> the signing keys for the packages, do a search for
> 'keyring', can't tell you the exact package for Ubuntu (as
> run debian) but to give you an example this is the one
> required for my system:
>
> debian-archive-keyring - GnuPG archive keys of the Debian
> archive
>
> If you have added any repositories there is likely a
> package specifically for that repository.
>
> Steve
