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TechCrunch40 organizer Jason Calacanis is madly spinning the glitch-filled presentations at his conference as a success. The back channel — on Twitter and IRC — begs to differ. The biggest problem: There's no cell phone service deep inside the Sheraton Palace, the hotel in which the conference is being held. You'd think organizers might have checked such a thing before scheduling wireless startups to go on stage with live demos, but no. Instead, with no canned presentations to show, entrepreneurs are attempting to talk about how cool their mobile Web products would be ... if they worked.