I've noticed that the following strings don't get translated any more, although they did some time ago:

• "Entering an {note|edit note}

  that describes where you got your information is highly recommended. Not only does it make it clear where you got your information, but it can also encourage other users to vote on your edit — thus making your edit get applied faster."

• On the main page:
  • "Like Wikipedia, MusicBrainz is maintained by a global community of users and we want everyone — including you — to {doc|participate and contribute}

    ."

  • " {about|More Information}

    —

    {faq|FAQs}

    —

    {contact|Contact Us}

    "

  • "Read more »"

Possibly more, I'll add them to comments here if/when I come across any.