Sometimes installing packages in Ubuntu 11.04 Natty via Software Center gives you ‘The package is of bad quality’ error. This article describes how to install packages via GDebi Package Installer in Ubuntu instead of Software Center. GDebi Package Installer was the default installer in Ubuntu prior to Maverick and  is still a great installer. It is stable, efficient and fast.

Below is the screenshot of the error.

Search for and install ‘GDebi Package Installer’ from Software Center.

Download the .deb package and right-click it and choose ‘Open With GDebi Package Installer’

Click ‘Install Package’

Enjoy!

Packages can also be installed by typing the command below:

sudo dpkg -i package_name