Some of the information here in the previous comments is old/outdated or incorrect. Here is the real story.
According to the DFSG and the FSF, CC-BY-SA >= 3.0 is Free. See http://wiki.debian.org/DFSGLicenses#CreativeCommonsAttributionShare- Alike.28CC-BY-SA.29v3.0 tangerine-icon-theme is licensed under CC-BY-SA 2.5... which is non- Free. Hence, vrms complains about it. Here's tangerine-icon-theme's COPYRIGHT file: http://packages.debian.org/changelogs/pool/non-free/t /tangerine-icon-theme/tangerine-icon-theme_0.26.debian-3/tangerine-icon- theme.copyright vrms works by parsing /var/lib/dpkg/status. For each package, vrms determines if it is installed, and if it is, it looks at the package's section to see if it's in the "non-free" section. For example, Here is an excerpt: Package: tangerine-icon-theme Status: install ok installed Priority: optional Section: non-free/x11 vrms sees "Section: non-free" and reports the package as non-Free. That's it... vrms has not logic to evaluate licenses, it simply uses the section. As for the solution, I think it's a Very Bad Thing that Ubuntu depends on a non-DFSG Free package right out of the box, and it's a serious problem that out to be fixed immediately (either by dropping tangerine- icon-theme from the default install, or changing the license to CC-BY-SA 3.0). -- CC-by-sa reported as non-free https://bugs.launchpad.net/bugs/144006 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs