Balazs Gal, one of the first new iPad buyers in Germany, poses with a new iPad (R) and an iPad2 in the Apple store in Munich March 16, 2012. Apple's new iPad went on a sale in Germany on Friday and more than 500 people waited on the line to purchase the new device in front of the shop prior to its opening. REUTERS/Michaela Rehle (GERMANY SCI TECH - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A man looks at his Apple iPad in front an Apple logo outside an Apple store in downtown Shanghai March 16, 2012. REUTERS/Aly Song (CHINA - Tags: BUSINESS TPX IMAGES OF THE DAY) 

A worker installs an Apple iPad 2 advertisement in downtown Shanghai March 27, 2012.
REUTERS/Aly Song (CHINA - Tags: SCIENCE TECHNOLOGY BUSINESS EMPLOYMENT) 

Apple Inc's latest tablet computer, the new iPad, (R) and its predecessor, the iPad 2, are pictured with a thermal camera in Berlin March 22, 2012. Apple Inc's new iPad reached temperatures of 116 degrees Fahrenheit (47 degrees Celsius) after 45 minutes of running an intense action game, or up to 13 degrees F (8 degrees C) hotter than the previous iPad under similar conditions, according to news reports on March 20, 2012 citing a test run by influential reviewer Consumer Reports. REUTERS/Tobias Schwarz (GERMANY - Tags: SCIENCE TECHNOLOGY BUSINESS TPX IMAGES OF THE DAY) 

General view as customers look at tables which display Apple's new iPad 4G-ready tablet computer at one of their stores in Paris March 16, 2012. The new iPad went on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain. REUTERS/Charles Platiau (FRANCE - Tags: BUSINESS SCI TECH) 

People wait on a street in front of an Apple store as they await sales of the new iPad in the Apple store in Munich March 16, 2012. Apple's new iPad went on a sale in Germany on Friday and more than 500 people waited on the line to purchase the new device in front of the shop prior to its opening. REUTERS/Michaela Rehle (GERMANY SCI TECH - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A man lines up to collect his pre-ordered new iPad outside an Apple store in Hong Kong March 16, 2012. The Apple branch in Hong Kong was the first in the region to open for online orders to avoid queuing confusion. REUTERS/Tyrone Siu (CHINA - Tags: BUSINESS TELECOMS SCIENCE TECHNOLOGY) 

Customers look at the new iPad at the Apple Store in the Eaton Centre shopping mall in Toronto, March 16, 2012. The new iPad went on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain. REUTERS/Mark Blinch (CANADA - Tags: BUSINESS SCIENCE TECHNOLOGY) 

New iPad tablets are seen in a window display in an Apple store in Sydney March 16, 2012. Apple Inc's new iPad went on sale in Australia early on Friday, greeted by throngs of fans hungry to get hold of the U.S. consumer giant's latest, 4G-ready tablet computer. REUTERS/Tim Wimborne (AUSTRALIA - Tags: SCIENCE TECHNOLOGY BUSINESS TELECOMS) 

Goran Marberg holds his new iPad, autographed by Apple co-founder Steve Wozniak who, with his wife Janet, waited in line overnight with customers at the Apple Store in Century City Westfield Shopping Mall in Los Angeles, California March 16, 2012. The launch of Apple's 4G-ready tablet computer comes as the company's share price hit $600 for the first time. REUTERS/David McNew (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

People walk by the Apple Store in the Eaton Centre shopping mall in Toronto, March 16, 2012. The new iPad went on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain. REUTERS/Mark Blinch (CANADA - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Customers enter the Apple flagship retail store to purchase the new iPad in San Francisco, California March 16, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY TPX IMAGES OF THE DAY) 

A man uses his iPad to photograph customers who have slept outside a store for 48 hours waiting to purchase new Apple iPad tablet computers in central London March 16, 2012. The new iPad goes on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain, with diehards lining up overnight in front of Apple stores in Munich, Paris, London, Singapore and Hong Kong. REUTERS/Toby Melville (BRITAIN - Tags: SCIENCE TECHNOLOGY BUSINESS) 

An Apple employee counts money as a customer purchases the newest iPad at the 5th Avenue Apple Store in New York, March 16, 2012. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A customer views displays of Apple iPads tablet computers in central London March 16, 2012. The new iPad goes on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain, with diehards lining up overnight in front of Apple stores in Munich, Paris, London, Singapore and Hong Kong. REUTERS/Toby Melville (BRITAIN - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Customers look at the new iPad at the Apple Store in the Eaton Centre shopping mall in Toronto, March 16, 2012. The new iPad went on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain. REUTERS/Mark Blinch (CANADA - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Customers look at the the new iPad at the Apple Store at the Toronto Eaton Centre shopping mall in Toronto March 16, 2012. The new iPad went on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain. REUTERS/Mark Blinch (CANADA - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Apple co-founder Steve Wozniak talks to a reporter as he and his wife Janet wait in line overnight with customers to purchase the new iPad at the Apple Store in Century City Westfield Shopping Mall in Los Angeles, California March 16, 2012. The launch of Apple's 4G-ready tablet computer comes as the company's share price hit $600 for the first time. REUTERS/David McNew (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Apple co-founder Steve Wozniak signs an autograph as he and his wife Janet (center, L) wait in line overnight with customers to purchase the new iPad at the Apple Store in Century City Westfield Shopping Mall in Los Angeles, California March 16, 2012. The launch of Apple's 4G-ready tablet computer comes as the company's share price hit $600 for the first time. REUTERS/David McNew (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Apple co-founder Steve Wozniak carries the new iPad which he just purchased, as he and his wife Janet (L) ride their personal Segways to their hotel, after waiting in line overnight with customers to purchase the new iPad at the Apple Store in Century City Westfield Shopping Mall, Los Angeles, California March 16, 2012. The launch of Apple's 4G-ready tablet computer comes as the company's share price hit $600 for the first time. REUTERS/David McNew (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Apple co-founder Steve Wozniak and his wife Janet (L) stand by for doors to open after waiting in line overnight with customers to purchase the new iPad at the Apple Store in Century City Westfield Shopping Mall in Los Angeles, California March 16, 2012. Apple Inc's newest iPad was looking like another hot seller on Friday, with hundreds queueing at stores across Asia and Europe to get their hands on a gadget likely to dominate the tablet-computer market well into next year. REUTERS/David McNew (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Apple co-founder Steve Wozniak carries the new iPad as he leaves the Apple Store in Century City Westfield Shopping Mall after waiting in line overnight with customers to purchase it in Los Angeles, California March 16, 2012. Apple Inc's newest iPad was looking like another hot seller on Friday, with hundreds queueing at stores across Asia and Europe to get their hands on a gadget likely to dominate the tablet-computer market well into next year. REUTERS/David McNew (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

The new iPad is seen at the Apple flagship retail store in San Francisco, California March 16, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A customer works on the new iPad at the Apple flagship retail store in San Francisco, California March 16, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A man walks past demonstrators protesting during the intial sales of the new iPad at the Apple flagship retail store in San Francisco, California March 16, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

An Apple employee awaits customers for the new iPad at the Apple flagship retail store in San Francisco, California March 16, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Customers look over the new iPad at the Apple flagship retail store in San Francisco, California March 16, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS) 

Customers wait for personal training after purchasing the new iPad at the Apple flagship retail store in San Francisco, California March 16, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Customers look over the new iPad at the Apple flagship retail store in San Francisco, California March 16, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

An Apple employee counts money as a customer purchases Apple's new iPad at the 5th Avenue Apple Store in New York, March 16, 2012. Apple Inc's newest iPad was looking like another hot seller on Friday, with hundreds queueing at stores across Asia and Europe to get their hands on a gadget likely to dominate the tablet-computer market well into next year. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A customer looks over his newly purchased new iPad at the Apple flagship retail store in San Francisco, California March 16, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Scott Miner reacts as he emerges from the Apple flagship retail store as the first local customer to purchase the new iPad in San Francisco, California March 16, 2012. REUTERS/Robert Galbraith (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

People wait in line to make purchases as Apple's newest iPad went on sale at the 5th Avenue Apple Store in New York, March 16, 2012. Apple Inc's newest iPad was looking like another hot seller on Friday, with hundreds queueing at stores across Asia and Europe to get their hands on a gadget likely to dominate the tablet-computer market well into next year. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A camerawoman films the new Apple iPad at the Apple Store in Washington, March 16, 2012. Apple's new iPad proved to be another hot-seller with people lining up before dawn to be the first to get their hands on the 4G-ready tablet computer as the company's share price hit $600 for the first time. REUTERS/Gary Cameron (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY MEDIA) 

An Apple iPad is pictured in a display window at the Apple Store in Washington, March 16, 2012. Apple's new iPad proved to be another hot-seller with people lining up before dawn to be the first to get their hands on the 4G-ready tablet computer as the company's share price hit $600 for the first time. REUTERS/Gary Cameron (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS) 

Store employees race out of the Apple Store to rev up customers waiting in line, in Washington March 16, 2012. Apple's new iPad proved to be another hot-seller with people lining up before dawn to be the first to get their hands on the 4G-ready tablet computer as the company's share price hit $600 for the first time.REUTERS/Gary Cameron (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Store employees race out of the Apple Store to rev up customers waiting in line, in Washington March 16, 2012. Apple's new iPad proved to be another hot-seller with people lining up before dawn to be the first to get their hands on the 4G-ready tablet computer as the company's share price hit $600 for the first time.REUTERS/Gary Cameron (UNITED STATES - Tags: BUSINESS) 

Apple's newest iPad is seen at the 5th Avenue Apple Store in New York March 16, 2012. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A customer purchases Apple's newest iPad at the 5th Avenue Apple Store in New York March 16, 2012. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Change.org protestors Roger Mingo (R) and Michael Trinite (L) hold a banner asking the Apple company to stop worker abuse in their factories outside the Apple store in Washington, March 16, 2012. Apple's new iPad proved to be another hot-seller with people lining up before dawn to be the first to get their hands on the 4G-ready tablet computer as the company's share price hit $600 for the first time. REUTERS/Gary Cameron (UNITED STATES - Tags: BUSINESS CIVIL UNREST) 

A man raises Apple's new iPad after purchasing it at the 5th Avenue Apple Store in New York March 16, 2012. The new iPad went on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain. REUTERS/Shannon Stapleton (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Customers wait to purchase Apple iPad tablet computers in Covent Garden in central London March 16, 2012. The new iPad goes on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain, with diehards lining up overnight in front of Apple stores in Munich, Paris, London, Singapore and Hong Kong. REUTERS/Toby Melville (BRITAIN - Tags: SCIENCE TECHNOLOGY BUSINESS) 

Apple's new iPad 4G-ready tablet computers are displayed at one of their stores in Paris March 16, 2012. The new iPad went on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain. REUTERS/Charles Platiau (FRANCE - Tags: BUSINESS SCI TECH) 

Three of Apple's new iPad 4G-ready tablet computers are displayed at one of their stores in Paris March 16, 2012. The new iPad went on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain. REUTERS/Charles Platiau (FRANCE - Tags: BUSINESS SCI TECH) 

Customers look at Apple's new iPad 4G-ready tablet computer at one of their stores in Paris March 16, 2012. The new iPad went on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain. REUTERS/Charles Platiau (FRANCE - Tags: BUSINESS SCI TECH) 

People line up at an electronic retailer as they wait for the start of the sale of Apple's new iPad tablet computer in Berlin March 16, 2012. The new iPad goes on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain, with diehards lining up overnight in front of Apple stores in Munich, Paris, London, Singapore and Hong Kong. REUTERS/Thomas Peter (GERMANY - Tags: SCIENCE TECHNOLOGY BUSINESS) 

A man pastes an poster advertising Apple's new iPad tablet computer to the window of an electronic retailer in Berlin March 16, 2012. The new iPad goes on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain, with diehards lining up overnight in front of Apple stores in Munich, Paris, London, Singapore and Hong Kong. REUTERS/Thomas Peter (GERMANY - Tags: SCIENCE TECHNOLOGY BUSINESS) 

People line up at an electronic retailer as they wait for the start of the sale of Apple's new iPad tablet computer in Berlin March 16, 2012. The new iPad goes on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain, with diehards lining up overnight in front of Apple stores in Munich, Paris, London, Singapore and Hong Kong. REUTERS/Thomas Peter (GERMANY - Tags: SCIENCE TECHNOLOGY BUSINESS) 

Oliver Voelkers holds up a new iPad being the first customer to purchase the most recent model of Apple's tablet computer at an electronic retailer in Berlin March 16, 2012. The new iPad goes on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain, with diehards lining up overnight in front of Apple stores in Munich, Paris, London, Singapore and Hong Kong. REUTERS/Thomas Peter (GERMANY - Tags: SCIENCE TECHNOLOGY BUSINESS) 

A staff member takes pictures customers lining up for the new iPad using the most recent model of Apple's tablet computer at an electronic retailer in Berlin March 16, 2012. The new iPad goes on sale on Friday in 10 countries, including the United States, Canada, Singapore, France and Britain, with diehards lining up overnight in front of Apple stores in Munich, Paris, London, Singapore and Hong Kong. REUTERS/Thomas Peter (GERMANY - Tags: SCIENCE TECHNOLOGY BUSINESS) 

New iPads are pictured in the Apple store in Munich March 16, 2012. Apple's new iPad went on a sale in Germany on Friday and more than 500 people waited in the line to purchase the new device in front of the shop prior to its opening. REUTERS/Michaela Rehle (GERMANY SCI TECH - Tags: BUSINESS SCIENCE TECHNOLOGY) 

A departmental store worker smiles as she carries units of Apple's new iPad to customers in Manhattan, New York, shortly after the 4G-ready tablet computer went on sale at midnight March 16, 2012. REUTERS/Eduardo Munoz (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS) 

A department store worker wheels in Apple's new iPads shortly after the 4G-ready tablet computer went on sale at midnight at a department store in Manhattan, New York March 16, 2012. REUTERS/Eduardo Munoz (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS) 

Boxes of new iPads rest on a shelf at an Apple store in Hong Kong March 16, 2012. The Apple branch in Hong Kong was the first in the region to open for online orders to avoid queuing confusion. REUTERS/Tyrone Siu (CHINA - Tags: BUSINESS TELECOMS SCIENCE TECHNOLOGY) 

New iPads are pictured in the Apple store in Munich March 16, 2012. Apple's new iPad went on a sale in Germany on Friday and more than 500 people waited in the line to purchase the new device in front of the shop prior to its opening. REUTERS/Michaela Rehle (GERMANY SCI TECH - Tags: BUSINESS SCIENCE TECHNOLOGY) 

Customers wait in line to buy Apple's new iPad at a department store shortly after the 4G-ready tablet computer went on sale at midnight, in Manhattan, New York March 16, 2012. REUTERS/Eduardo Munoz (UNITED STATES - Tags: SCIENCE TECHNOLOGY BUSINESS) 

A couple compares an Apple third generation iPad to an iPad 2 on display at an Apple reseller store in Singapore March 16, 2012. Apple's new iPad proved to be another hot-seller on Friday, with hundreds queuing at stores across Asia to be the first to get their hands on the 4G-ready tablet computer as the company's share price hit $600 for the first time. REUTERS/Tim Chong (SINGAPORE - Tags: BUSINESS SCIENCE TECHNOLOGY TELECOMS) 

Murat Omarov, 26, of Kazakhstan, holds up his iPad in hopes of buying the new iPad at an Apple store in Hong Kong March 16, 2012. The Apple branch in Hong Kong was the first in the region to open for online orders to avoid queuing confusion. REUTERS/Tyrone Siu (CHINA - Tags: BUSINESS TELECOMS SCIENCE TECHNOLOGY) 

Staff clap for a customer (L) who bought a new iPad at an Apple store in Hong Kong March 16, 2012. The Apple branch in Hong Kong was the first in the region to open for online orders to avoid queuing confusion. REUTERS/Tyrone Siu (CHINA - Tags: BUSINESS TELECOMS SCIENCE TECHNOLOGY) 

Staff await customers at an Apple store in Hong Kong March 16, 2012. The Apple branch in Hong Kong was the first in the region to open for online orders to avoid queuing confusion. REUTERS/Tyrone Siu (CHINA - Tags: BUSINESS TELECOMS SCIENCE TECHNOLOGY)