Ubuntu
update-manager package

Why do I get this error message in Update Manager!

Asked by Melinda

Update Manager started to update automatically, then when it was finished I got the following error message below. W: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/l/linux/linux-libc-dev_2.6.28-15.49_i386.deb
  Unable to connect to security.ubuntu.com http:

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actionparsnip
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Mark Rijckenberg (markrijckenberg) said : 		#1

Hi Melinda,

It probably means your pc was temporarily experiencing network issues and could not fully download that specific package.

If you try one or two more times to update your system, the error will probably disappear.

Regards,

Mark

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Best actionparsnip (andrew-woodhead666) said : 		#2

try:

sudo apt-get update; sudo apt-get upgrade

The server does appear slow.

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Melinda (melired15-deactivatedaccount) said : 		#3

Thanks actionparsnip, that solved my question.

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john (jaytee1937) said : 		#4

I get this message when using the update manager:

GPG error: http://ppa.launchpad.net jaunty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D0D3C959DB2035A6
How can this error be corrected. I have followed several threads but the error still remains.

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actionparsnip (andrew-woodhead666) said : 		#5

gpg --keyserver pgpkeys.mit.edu --recv-key DB2035A6; gpg -a --export DB2035A6 | sudo apt-key add -

Should fix you up

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marcobra (Marco Braida) (marcobra) said : 		#6

Your system need a gpg signature key, this key D0D3C959DB2035A6 so please try this:

Open a Terminal from the menu Applications → Accessories → Terminal and type or better copy and paste a row a time then press enter:

sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com D0D3C959DB2035A6

Then type: (when the system ask you a password give your user password, you will not see nothing when you type it, then press enter)

sudo apt-get update
sudo apt-get dist-upgrade

to update your system.

Hope this helps