Problem with searching and translation

Something strange is happening with translation and the search page. When I make a search and the search page is shown, the title and subtitle of the search are not translated. This strings are located in loop-meta.php:

/* Translators: %s is the search query. The HTML entities are opening and closing curly quotes. */
$toivo_archive_title = sprintf( __( 'Search results for “%s”', 'toivo' ), get_search_query() );
$toivo_loop_desc     = sprintf( __( 'You are browsing the search results for “%s”', 'toivo' ), get_search_query() );;

I’ve compared these strings with the strings in language template, and are equals… and, of course, in the Spanish and Catalan po files too (because are based in template).

Anyone else have this problem?

I’m not shure if is a Theme problem or WordPress one (the load_theme_textdomain function is loaded corretly in after_setup_theme action).