version iceweasel & error Gpg.

[Fredo]

Hi,

I would install the last iceweasel version but i meet two problems ...

My first problem:

When i choose "iceweasel" and version "release" i have the version 
10.0.12 during install.

I think had the version more recently. :s

My second problem:

When i run apt-get update command i had the following error:

"W: Erreur de GPG : http://your-mirror.debian.org experimental InRelease 
: Le fichier 
/var/lib/apt/lists/partial/your-mirror.debian.org_debian.org_dists_experimental_InRelease 
ne commence pas par un message signé en clair."

Thank for your answers.

Sorry for my English language :s.