apt-get authenticated warning ?

[capron]

When I install some things using apt-get I get this warnings about authenticated!

WARNING: The following packages cannot be authenticated!
transmission-common transmission-cli transmission-gtk transmission
Install these packages without verification [y/N]? y

I tried apt-key update.

apt-key list
Ubuntu Archive Automatic
BackTrack Repository
Ubuntu CD Image Automatic

[purehate]

Looks like you added some repositories

[capron]

After dowloading and add a new key everyting seems to bee okey.

http://archive.offensive-security.com/backtrack.gpg

[Animus]

I'm running from USB, and whenever I enable the "Backtrack Dev Repository" I get that message...

I do the following:

wget -q http://archive.offensive-security.com/backtrack.gpg -O- | sudo apt-key add -

But still get the error...

Any ideas, gents?

<I'm grateful for this pen-distro. Thank you, BT team.>