Problem with apt-get and gpg key

[Sergio Cuéllar Valdés <herrsergio@gmail.com>]

Hi,

When I make an apt-get update I get an error concerning a gpg key:


W: GPG error: http://http.us.debian.org testing Release: The following
signatures were invalid: BADSIG F1D53D8C4F368D5D Debian Archive
Automatic Signing Key (2005) <ftpmaster@debian.org>
W: You may want to run apt-get update to correct these problems


When I list the keys with apt-key list:
pub   1024D/4F368D5D 2005-01-31 [expires: 2006-01-31]
uid                  Debian Archive Automatic Signing Key (2005)
<ftpmaster@debian.org>

It expires at 31 January.

I am running Testing.

Yesterday I didnt have this problem.

Cheers,
Sergio