I have installed the NuBlog template with the quickstart package, and I am now trying to transfer the content of my old webpage (blog) to this new page. It is still only installed on my local computer untill I have a satisactory result.
The set-up of the English version has been relatively easy, and looks fine. I am now trying to make it multilingual (English, Spanish, Danish). I have made versions of all modules and menus and installed the language switcher, and it works OK, with dropdown menus in different languages.
My problems are with the category list that appears in the right side bar - I can find no way to get this to change language. All articles are defines as K2 items. I have made en,es,da copies of all the category modules (and there are a bewildering amount of them), including the K2 category module, and I have disabled the K2 "all" category module.
Another minor problem is that the "about me" module takes its text from the user profile, and that is in English. I guess the only way to get around this is to define clones of the main user and define each clone with a different language (and email adress) and then change the presentation text. Not a very elegant solution. I attach a link to screen-shot of the Spanish Language page where it can be seen that the sidebar category list continues in English (and that the in "About me").
imgur.com/gaZYBFa

I finally found the solution in the K2 tools category module. Under options there are 6 places where the category list can be chosen. Setting all these 6 to my Spanish category list, made the wonder. Now it the side bar displays correctly in Spanish.