Dell UK has been charging people to have Firefox pre-installed.
http://thenextweb.com/insider/2014/03/05/mozilla-investigating-dell-uk-charging-16-25-install-firefox-says-deal-exists-anyone/#!yWmD4
They also had a clause in their speaker's warranty that said it was void if you installed VLC on the computer that was connected to the speakers.... I'm not sure if they've fixed that yet.
That's a load of bullcrap.