This Week in Barron's: After years of growth, the country's largest trash hauler seems have become stagnant despite the signs that would normally attract investors; Office-supply giant Staples feeling the pressure from increased competition and tough economic times; Investors looking for a global company that keeps in step with the times would be pleased to take a look at one of the world's leading watch makers; The cost of meat is going up due to the severe drought taking a hard toll on wheat and corn crops;