Poor guy can't catch a break. Talking to analysts today about the world of tablets, Steve Ballmer put on a brave face about his lack of a strong competitor to the iPad, saying of Windows 7 products in the works with third parties: "They'll be shipping as soon as they are ready." Unfortunately, Apple's iPad looms large, with Ballmer stating that "they've sold certainly more than I'd like them to have sold." Perhaps more revelatory, Steve likened the tablet challenge to the sit