Comment 4 for bug 578045

Firefox has now become a bad example, because it is being special-cased by the Desktop team. <https://lists.ubuntu.com/archives/ubuntu-devel-announce/2010-June/000719.html> So this bug report would benefit from rewriting with one or two different examples. (chromium-browser would be a candidate, but it's likely to be special-cased too if it's used by default in UNE 10.10.)