Apt-get update problem??

[nomko]

Hi,

I've got an apt-get problem:

Apt authenticationproblem

Problem during package list update. The package list update failed with a authentication failure. This usually happens behind a network proxy server. Please try to click on the "Run this action now" button to correct the problem or update the list manually by running Update Manager and clicking on "Check".

When i click on check the following message apears:

W: An error occurred while verifying the signatures. The repository is not updated and the previous index files will be used. GPG error: http://linux.dropbox.com hardy Release: The following signatures were invalid: 1 NODATA NODATA 2

W: Failed to fetch http://linux.dropbox.com/ubuntu/dists/lucid/Release

W: Collect Some index files failed, they have been ignored, or old ones used instead.

What does this mean?? And what the cause of this problem and does anyone know a solutions??
Many thanks!

[philinux]

Need to see your sources list. The error mentions Hardy and lucid.

Open a terminal.

cat /etc/apt/sources.list

Paste the output back here. Don't forget to wrap code tags around it.

[nomko]

My sourcelist:

deb http://nl.archive.ubuntu.com/ubuntu/ lucid main restricted

deb http://nl.archive.ubuntu.com/ubuntu/ lucid-updates main restricted

deb http://nl.archive.ubuntu.com/ubuntu/ lucid universe

deb http://nl.archive.ubuntu.com/ubuntu/ lucid-updates universe

deb http://nl.archive.ubuntu.com/ubuntu/ lucid multiverse

deb http://nl.archive.ubuntu.com/ubuntu/ lucid-updates multiverse

deb http://archive.canonical.com/ubuntu lucid partner

deb http://security.ubuntu.com/ubuntu lucid-security main restricted

deb http://security.ubuntu.com/ubuntu lucid-security universe

deb http://security.ubuntu.com/ubuntu lucid-security multiverse

deb http://www.ftd4linux.nl/releases/ubuntu lucid main
deb http://mirrors.dotsrc.org/getdeb/ubuntu lucid-getdeb apps
deb http://mirrors.dotsrc.org/getdeb/ubuntu lucid-getdeb games
deb http://download.virtualbox.org/virtualbox/debian lucid non-free
deb http://ppa.launchpad.net/vala-team/ppa/ubuntu lucid main

I do need to tell you that this is not the complete list. Under /etc/apt/sources.list.d there are some more source listings and one of them is for Dropbox:

deb http://linux.dropbox.com/ubuntu lucid main

http://img716.imageshack.us/img716/5...en02122010.png

[nomko]

Nobody?

[sikander3786]

GPG key for dropbox is missing. You can try adding that as mentioned here.

http://forums.dropbox.com/topic.php?id=10123

Or see this.

http://forums.dropbox.com/topic.php?id=20075

Or this.

http://www.webupd8.org/2009/10/dropb...available.html

[nomko]

GPG key for dropbox is missing. You can try adding that as mentioned here.

http://forums.dropbox.com/topic.php?id=10123

Or see this.

http://forums.dropbox.com/topic.php?id=20075

Or this.

http://www.webupd8.org/2009/10/dropb...available.html

Why is it missing? The website of Dropbox gives u 2 options: either by hand or by a .deb file. I've done both but still getting the same error. It's like that the GPG key is not correctly added using both options. And'i'm using 10.04 Lucid Lynx, i hope that solution for Karmic will help. Thanks anyway!