Ubuntu, security & freedom. Can they still live together?

There is a long and somewhat heated argument taking place in the Ubuntu forums over a post by Ian Jackson in the Ubuntu Developers mail list, which is a wrapup of a discussion held on the irc #ubuntu-devel channel. The post advocates a change in the Ubuntu security policy by making it more difficult for new users to install untrusted 3rd party software.

Linux and the FOSS movement in general are built around a philosophy of freedom, but this “freedom” seems to have as many definitions as there are users. Most of the time that is not a problem, as one of those definitions of freedom is having the freedom to disagree on any and every point under discussion, and they are certainly doing that on the forums.