WP installation: English
WP lang set in plugin: German
WP admin lang set in plugin: English
Theme: Twenty Twelve
Site (skeleton): http://www.gummitwist.ch/
The following strings appear on the site in English instead of German:
- 'Leave a reply'
- 'This entry was posted in '....
- 'Proudly powered by WordPress'
Translations for both WP and the theme are marked as 100% complete: