Gregg Keizergkeizer@computerworld.com, Computerworld Follow me on Google+

Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news.

iPhone trade-in prices start to slip after iPhone 5 unveiling

Used iPhone values dropped as much as 8 percent at several trade-in firms after Apple announced the new iPhone 5 and cut prices for two older models this week.

Analysts set high expectations for iPhone 5 Wednesday

One thing's certain, analysts said Wednesday: Just hours from now, Apple will hit a home run when it unveils its next iPhone.

Mac virtualization vendors prep for Windows 8

The two best-known virtualization products for the Mac, Parallels Desktop for Mac and Fusion, have both now produced updates optimized for the upcoming Windows 8.

Inoperable Apple I to be auctioned October 9

Christie's on Tuesday said it will auction off an Apple I computer from the company's first batch, and predicted the machine will sell for as much as $126,000 when it hits the block in October.

Mozilla sets end of Firefox for OS X Leopard

Mozilla will drop support for Apple's OS X 10.5, or Leopard, after it ships Firefox 16 in October, according to company developers.

Apple closes Retina MacBook Pro supply-demand gap

Apple continues to narrow the gap between supply and demand for its high-priced, high-resolution Retina MacBook Pro.

Google building stronger Flash sandbox in Chrome

Google says it had wrapped up work on a stronger Flash sandbox in the Windows version of Chrome, and would soon ship the same for its OS X browser.

Talk of a Sept. 12 iPhone launch triggers trade-in flurry

Speculation about a Sept. 12 announcement of a new iPhone triggered a 70 percent jump in the number of owners trying to unload their current smartphones, according to eBay.

Ad network: Mountain Lion grabs 3 percent share of OS X in first 48 hours

An advertising network claims that Mountain Lion powered more than 3 percent of all Macs within two days of the OS X update's release.

Yahoo fixes password-pilfering bug, explains who's at risk

Yahoo said it has fixed the flaw that allowed hackers to steal more than 450,000 passwords from one of its many services.

Apple improves Retina MacBook Pro shipping times

Apple's Retina MacBook Pro is now shipping faster to online customers, according to the company's e-stores in several countries.

Google to pull Chrome plug on OS X Leopard

Google will pull the plug for Chrome running on OS X 10.5, aka Leopard, after it releases version 21, which is currently in beta and will reach the browser's stable channel next month.

Apple kicks off new iPad sales in China next week

Apple on Tuesday said the company will start selling the new iPad in China starting Friday, July 20.

Apple ships final OS X Mountain Lion to developers

Apple on Monday released a "golden master" of OS X Mountain Lion to developers, putting the impending operating system on track to reach customers this month. Apple said at June's WWDC that Lion would arrive in July.

Windows 8, OS X upgrades by the numbers

Like 2009, this year is one of dueling operating system upgrades, when the two biggest desktop OS rivals face off with new editions.