<http://www.ubuntu.com/ubuntu/licensing>: "All application software included in the Ubuntu main component ... Must allow modification and distribution of modified copies under the same licence. Just having the source code does not convey the same freedom as having the right to change it."
-- Some components are non-free https://launchpad.net/bugs/83118 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs