I think it is working now.But still getting some error while installing downloaded updates.
dpkg: regarding .../ncurses-base_5.7+20100313-5_all.deb containing ncurses-base: package uses Breaks; not supported in this dpkg dpkg: error processing /var/cache/apt/archives/ncurses-base_5.7+20100313-5_all.deb (--unpack): unsupported dependency problem - not installing ncurses-base Errors were encountered while processing: /var/cache/apt/archives/ncurses-base_5.7+20100313-5_all.deb E: Sub-process /usr/bin/dpkg returned an error code (1) Best Regards, Joysankar Sengupta On Thu, Jun 21, 2012 at 10:56 AM, Brian <a...@cityscape.co.uk> wrote: > On Thu 21 Jun 2012 at 16:06:53 +0530, Joy Sankar Sengupta wrote: > > > Now I am getting the following error after executing "apt-get update": > > Reading package lists... Done > > W: GPG error: http://ftp.us.debian.org squeeze Release: The following > > signatures couldn't be verified because the public key is not available: > > NO_PUBKEY AED4B06F473041FA > > W: You may want to run apt-get update to correct these problems > > It's a warning. Please see an earlier post in this thread to rectify it. > Also, you can ignore it if you wish. > > > -- > To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact > listmas...@lists.debian.org > Archive: http://lists.debian.org/20120621105655.GX30016@desktop > >