Gallery 2.3 not translating

Just in case you would fall upon this issue as well, Gallery2 requires the corresponding language-specific locales to be installed on the system (it depends on them to show the matching translated terms). The code to do that (and to debug it) is located (in Gallery 2.3) on line 330 of modules/core/classs/GalleryTranslator.class. We hope it helps you a little.