PGP problem ubuntu jaunty (9.04)

Hi,

I'm trying to download the 1.10 RC1 on ubuntu jaunty.
Now there is no special version voor jaunty, so i'm trying the feisty
version.
I'm using these instructions:
http://www.pgadmin.org/download/ubuntu.php

I installed the key mentioned,
me(at)my-laptop:~$ sudo wget -q -O -
http://www.pgadmin.org/pgp/archive_key_debian_ubuntu.gpg | sudo apt-key add
-
OK

but apt-get update gives me:
W: GPG error: http://ftp.de.postgresql.org feisty Release: The following
signatures were invalid: KEYEXPIRED 1216032645

I've used several mirrors (several dutch, german), but the problem remains.

What's going wrong?

Willy-Bas
--
"Patriotism is the conviction that your country is superior to all others
because you were born in it." -- George Bernard Shaw