error during apt-get update

I get this error wen i do a apt-get update ??? ... .. Reading package lists... Done W: GPG error: http://www.debian-multimedia.org etch Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 07DC563D1F41B907

Re: error during apt-get update

W: Duplicate sources.list entry http://ftp.iitm.ac.in etch/main Packages (/var/lib/apt/lists/ftp.iitm.ac.in_debian_dists_etch_main_binary-i386_Packages) W: You may want to run apt-get update to correct these problems [EMAIL PROTECTED]:/auto/home2/sen#

Re: error during apt-get update

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 SENTHIL KUMAR wrote: I get this error wen i do a apt-get update ??? ... .. Reading package lists... Done W: GPG error: http://www.debian-multimedia.org etch Release: The following signatures couldn't be