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Facebook's latest 10-Q filing reveals that nearly 20 percent of its more than 543 million monthly mobile users accessed the social network in June solely on their mobile device. That's 102 million people.

These astounding numbers were first reported by TechCrunch, which also notes that mobile-only users have increased dramatically. According to the SEC 10-Q report, 83 million people visited the site with only their mobile device in March, which adds up to a 23 percent increase of mobile-only users from March to June.

The specifics of Facebook's mobile use are important because the company's revenue … Read more

It's been a dismal week for Zynga. First news of bleak revenue growth in the second quarter followed by plunging stock prices, then accusations of insider trading... and now the gaming company is being slapped with two shareholder lawsuits.

The almost identical lawsuits are being filed by two California law firms seeking class-action status on behalf of stockholders who are accusing Zynga of not warning them about slumping revenue growth before the company's shares plummeted 42 percent last week, according to Reuters.

"Zynga misrepresented or failed to disclose material adverse facts about its business, operations, and growth … Read more

Symantec's CEO Enrique Salem stepped down today after the company's board of directors designated chairman of the board Steve Bennett as the new president and CEO.

This executive switch-over comes as the security software giant reported an abysmal year for revenue -- second-quarter growth was just 1 percent to $1.67 billion, and profits decreased by 10 percent to $172 million, according to Bloomberg.

"Enrique Salem has been a significant contributor during his 19 years' associated with Symantec, including the last three years as CEO," Bennett said in a statement. "While progress has been made … Read more

Advanced Micro Devices, the world's second largest PC processor supplier, had some sobering things to say about the PC market when the company reported earnings Thursday.

"For the first time since 2001, client PC shipments have declined sequentially for three consecutive quarters-and have been below historical averages for the last seven quarters," AMD CEO Rory Read said during the chip supplier's second quarter earnings conference call.

"We also believe the PC industry may be resetting to a new [lower] baseline," he said.

Revenue declined 10 percent to $1.41 billion for the the Sunnyvale, … Read more

Ultrabook numbers will fall far short of Intel's aggressive market share targets, an IDC analyst told CNET. The MacBook Air, meanwhile, continues to coast amid continued popularity.

An IDC report today showed a weak PC market caught in its seventh consecutive quarter of little to no growth.

"The volume isn't there and it's going to be way below what Intel had hoped for," IDC analyst Jay Chou told CNET, referring to ultrabooks.

"The first half [of 2012] is about 500,000 ultrabooks shipped worldwide. It's nowhere near Intel's initial hope," Chou … Read more

Advanced Micro Devices said today that revenue for the quarter ending June 30 is expected to be off 11 percent sequentially.

That's a very different outlook from what AMD forecast previously when it said that second-quarter 2012 revenue was expected to increase 3 percent sequentially, plus or minus 3 percent.

"The lower preliminary revenue results are primarily due to business conditions that materialized late in the second quarter, specifically softer-than-expected channel sales in China and Europe," the company said.

But AMD also attributed the worse-than-expected result to "a weaker consumer buying environment impacting the company's … Read more

Dell is preparing a raft of tablets, hybrids, and ultrabooks for the Windows 8 launch later this year.

"The addition of capacitive touch capability into Windows 8, we think, will be a welcome addition...and will have a full complement of products at time of launch," Michael Dell said today during the company's first-quarter 2013 earnings conference call, in response to an analyst's question.

"We're totally lined up with Windows 8. You'll see us introduce tablets," he added.

And he suggests that Windows 8 touch-centric interface means that current PCs will not … Read more

AT&T CEO Randall Stephenson recently made some public statements about Google that the Web giant says don't really pan out, according to 9to5Google.

During a panel discussion put on by the Milken Institute last week, an audience member asked Stephenson why there's such a delay in updating Google's operating system on devices carried by AT&T. Basically Stephenson blamed Google for delayed updates.

"Google determines what platform gets the newest releases and when," Stephenson replied. "Oftentimes, that's a negotiated arrangement and that's something we work at hard. We know … Read more

Samsung's smartphone shipments soared over the same period last year, allowing it to easily grab the lion's share of the global market, while Nokia's share plummeted, a market researcher said Thursday. Another market researcher put Samsung No.1 in the overall cell phone market.

The South Korean electronics giant's share went from 12.2 percent in the first quarter of 2011 to a whopping 30.6 percent in the first quarter of this year, according to Strategy Analytics (see chart below).

Apple's growth isn't too shabby either: it jumped from an 18.1 percent … Read more