Updated: 03:15 AM ESTNetflix Presses Pause for Heavy DVD Renters 'Throttling' Practice Delays Shipments, Gives Preference to Infrequent RentersBy MICHAEL LIEDTKE, AP SAN FRANCISCO (Feb. 11) - Manuel Villanueva realizes he has been getting a pretty good deal since he signed up for Netflix Inc.'s online DVD rental service 2 1/2 years ago, but he still feels shortchanged. That's because the $17.99 monthly fee that he pays to rent up to three DVDs at a time would amount to an even bigger bargain if the company didn't penalize him for returning his movies so quickly. Carlos Osorio, AP Netflix subscriber...