This screen shot shows Apple Inc.'s new music-discovery feature, Ping, a potentially useful addition to iTunes, letting you see what songs your friends are buying and where your favorite bands are playing next. (AP Photo/Apple Inc.) NO SALES
In this Jan. 27, 2010, file photo, the iPad is shown after it was unveiled at the Moscone Center in San Francisco. Apple Inc. said Thursday, Sept. 9, 2010, that it will publish the guidelines it uses to determine which programs can be sold in its App Store. (AP Photo/Marcio Jose Sanchez, FILE)
Apple CEO Steve Jobs talks about free protective cases for Apple iPhone 4 users during a news conference, Friday, July 16, 2010, at the company's headquarters in Cupertino, Calif. Apple Inc. is giving the cases to buyers of the newest iPhone to alleviate the so called "death-grip" problem in which holding the phone with a bare hand can muffle the wireless signal. (AP Photo/Paul Sakuma)
Apple CEO Steve Jobs talks about free protective cases for Apple iPhone 4 users during a news conference, Friday, July 16, 2010, at the company's headquarters in Cupertino, Calif. Apple Inc. (AP Photo/Paul Sakuma)
FILE - In this file photograph taken April 8, 2010, Apple Inc. Chairman and CEO Steve Jobs, second left, talks with senior vice president of worldwide marketing Philip Schiller, left, following an event at Apple Inc. in Cupertino, Calif. Apple Inc. reports second-quarter earnings Tuesday, July 20, 2010, after the market close. (AP Photo/Eric Risberg, file)
In this file photo taken June 7, 2010, Apple CEO Steve Jobs demonstrates the new iPhone 4 during the Apple Worldwide Developers Conference, in San Francisco. Apple Inc. is holding a press conference at its Silicon Valley headquarters Friday morning to talk about its latest iPhone model. (AP Photo/Paul Sakuma, File)
** FILE ** In this file photo taken June 29, 2010, the Apple iPhone 4 is shown at the Apple Store, in New York. A decision by Consumer Reports not to recommend the iPhone 4 because of reception issues could tarnish Apple Inc.'s reputation, but the snub isn't likely to dissuade fans who have braved poor reception for years. (AP Photo/Jason DeCrow, file)
In this Wednesday, June 23, 2010, photo Russian President Dmitry Medvedev looks at an iPhone 4 with Apple Chairman and CEO Steve Jobs at Apple Inc. in Cupertino, Calif. Mr. Medvedev visited Silicon Valley as part of a U.S. tour that took him to Washington for meetings with President Obama on Thursday. (AP Photo/RIA-Novosti, Dmtiry Astakhov, Presidential Press Service)
Piotr Kubiak of Oakland, Ill., shows off his new Apple iPhone 4, outside of an Apple store Thursday, June 24, 2010, in Chicago. Apple Inc.'s newest iPhone was selling briskly Thursday as thousands lined up outside stores around the world to become among the first to own the device amid concerns of supply shortages.(AP Photo/Kiichiro Sato)
