BRUSSELS (Reuters) - Belgium's history of linguistic bickering between Flemings and Walloons entered a new phase this week when police arrested a Flemish woman for calling her Walloon husband lazy, Belgian media said Thursday. The 48-year-old husband filed a complaint for racism against his spouse for scratching him and calling him "a lazy Walloon, a slave and an inferior creature," De Standaard daily said. The 47-year-old woman will appear before a magistrate later Thursday to face charges of racism, the newspaper said. Dutch-speaking Flemings and French-speaking Walloons are not only linguistically divided but also split socio-economically between a prosperous Flanders...