Problems with apt-get update - GPG erros

[Evan]

I found it in my e-mail:
https://help.ubuntu.com/community/UserDocumentation

On 1/29/07, Evan <evangerard at gmail.com> wrote:
> You may not like the answer, but I would recommend googling "GPG
> errors Ubuntu". I had the same problem and found the answer in the
> Ubuntu forums.
>
> On 1/29/07, Paul Thompson <ubantu001 at gmail.com> wrote:
> > Hi,
> >
> > I am getting this messages when I run apt-get update -
> >
> > Ign http://nz.archive.ubuntu.com edgy/main Translation-en_NZ
> > Ign http://security.ubuntu.com edgy-security/main Translation-en_NZ
> > Ign http://nz.archive.ubuntu.com edgy-backports/main Translation-en_NZ
> > Ign http://security.ubuntu.com edgy-security/restricted Translation-en_NZ
> > Ign http://nz.archive.ubuntu.com edgy-backports/restricted
> Translation-en_NZ
> > Ign http://nz.archive.ubuntu.com edgy-backports/universe Translation-en_NZ
> > Ign http://security.ubuntu.com edgy-security/universe Translation-en_NZ
> > Ign http://nz.archive.ubuntu.com edgy-backports/multiverse
> Translation-en_NZ
> > Err http://security.ubuntu.com edgy-security Release
> >
> > W: GPG error: http://security.ubuntu.com edgy-security Release: The
> > following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu
> > Archive Automatic Signing Key <ftpmaster at ubuntu.com>
> > W: You may want to run apt-get update to correct these problems
> >
> > Running apt-get update does not fix the problem. I realise that I need
> > to update the GPG key but do not know how to do it.
> >
> > Guidance on this matter would be most appreciated.
> >
> > Regards,
> >
> > Paul Thompson
> >
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