I have further cleaned up the English translation, especially in the AdminCP, to make things a bit more understandable now that I understand what it all does.
To "upgrade", just backup your database/download your current language file, unzip the .xml in this zip and go to your
AdminCP - Languages and Phrases - Download / Upload Languages and browse to it and upload it into your existing English language.
To see the 'new translation' in action:
http://forums.nzboards.com/statistic.php (I have edited the STATISTIC template slightly to change the names of the 'Type' column on the right..if anyone wants the changes, I will post them here)
If you don't like it, just upload the language .xml you backed up prior.