I’ve upgraded to the daily build of Ubuntu 11.04 Natty Narwhal.
Installing Adobe Reader or other packages like Skype, Dropbox, TeamViewer, Google Chrome Google Talk Plugin or CrossOver after downloading the .deb files from the respective sites, since they are not provided by the official Ubuntu repositories, i get the error:
The package is of bad quality – The installation of a package which violates the quality standards isn’t allowed…
and the installation cannot complete.
Ubuntu Natty opens .deb files by default with software-center. This error is caused by the Lintian module used by software-center to check packages for consistency and other errors. The problem will probably be solved before the official 11.04 release at the end of April.
But it’s very easy to install the same packages in other ways, such as the “old” package managers dpkg or gdebi.
To install a .deb file with dpkg, from a terminal window, for example, use the command:
sudo dpkg -i /<path>/packagename.deb
Or, with gdebi:
sudo gdebi /<path>/packagename.deb