Harry Potter bought his first wand in Diagon Alley and Google Maps can take you there. A federal judge finds Apple guilty of antitrust violations. Some see social media as a business booster while others think it's just a time killer. Which is right? In Short Circuits, PC sales still decline, but not as fast. Windows 8.1 will be sent to manufacturers before September, and a Google researcher is in hot water because of a private blog post that made it possible for thieves to target Windows PCs.