"Installing unsigned software" error for all software

[Jephir]

I am using KPackageKit to install software. However, no matter what software I try to install, I always get an error that says:

You are about to install unsigned packages can compromise your system, as it is impossible to verify if the software came from a trusted source.
Are you sure you want to continue installation?

Is it safe to ignore this warning, or is there something that I need to fix on my system?

[Snowhog]

Re: "Installing unsigned software" error for all software

The packages available in the default sources are safe. But using KPackageKit isn't your best option. Do your self a favor and install Synaptic and/or Muon package manager. Muon is the upcoming replacement to KPackageKit, and KPackageKit, in a word, SUCKS. Synaptic is the de-facto package manager, even if it is Gnome based. It just works.

[Rog131]

Re: "Installing unsigned software" error for all software

Warning:

You are about to install unsigned packages...

&
Q:

Is it safe to ignore this warning, or is there something that I need to fix on my system?

This sounds like a GPG key problem. The GPG key is used to to authenticate the packages. That the packages are from the safe source and uncompromised.


Links:
> Beginners Guide to GnuPG
> Fixing Ubuntu's GPG error issue
> W: GPG error: http://archive.canonical.com karmic Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>


I would use the commmandline to check the situation and fix it.

Updating the package database:

sudo apt-get update

any GPG warnings ?

Installing a package:

sudo apt-get install <package_name>

any GPG warnings ?