[Freeswitch-users] debian repositories and gpg key no longer valid.

[Mauro]

Hello.
I want to install freeswitch on my debian squeeze.
I've put deb http://files.freeswitch.org/repo/deb/debian/ squeeze main
in my soiurces.list, like said in
http://wiki.freeswitch.org/wiki/Installation_Guide.
Then I did
update apt-get.
curl http://files.freeswitch.org/repo/deb/debian/freeswitch_archive_g0.pub
| apt-key add -
apt-get update.
I've a gpg error it said that the key is not valid.
Where can I put a valid key?
Thank you.