PCWorld – Microsoft Corp. will let users run Windows 7 Release Candidate (RC) for more than a year, giving them free use of the new operating system for a significantly longer time than it did Vista’s previews.

Windows 7 RC, slated for download by MSDN and TechNet subscribers Thursday and by the general public on May 5, doesn’t expire until June 1, 2010, 13 months from Friday, Microsoft confirmed Thursday.

When asked why the company is giving users such a long free pass for the software, a spokeswoman declined to comment.

The date had been leaked more than a month ago, when a Microsoft site temporarily posted a page that revealed other details of the upcoming RC, including a May delivery and no limit on the number of downloads.
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“You don’t need to rush to get Windows 7 RC,” the leaked page read in late March. “The RC release will be available at least through June 2009 and we’re not limiting the number of product keys, so you have plenty of time.”

The 13-month lifespan of Windows 7 RC is substantially longer than the time limit Microsoft put on Vista’s release candidates. In September and October 2006, Microsoft issued Vista RC1 and Vista RC2, respectively; both expired June 1, 2007. Users of Vista RC2, then, were able to run the operating system free of charge for nearly eight months.

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newscientist.com – The smallest ever incandescent lamp, made using a single carbon nanotube, has been created by physicists in the US. At 1.4 micrometres long and just 13 nanometres wide, the filament is invisible to the naked eye until it is switched on.

Chris Regan’s team at the University of California, Los Angeles attached a palladium and gold electrode to each end of the carbon nanotube, which spans a tiny hole in a silicon chip and is held in a vacuum.

When electricity runs along the nanotube it heats up and begins to glow, releasing millions of photons every second, of which a few thousand reach the eye. “That makes the light relatively easy to see,” says Regan. “Your eye is nearly single-photon sensitive.” But it would make a poor reading lamp, he jokes.
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It is bright enough, though, to shed light on one of the fundamental incompatibilities in physics – the mismatch between thermodynamics and quantum mechanics.

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networkworld.com – A range of companies with wireless LANs are discovering that 50% to 90% or more of Ethernet ports now go unused, because Wi-Fi has become so prevalent.

They look at racks of unused switches, ports, Ethernet wall jacks, the cabling that connects them all, the yearly maintenance charges for unused switches, electrical charges and cooling costs. So why not formally drop what many end users have already discarded — the Ethernet cable?

“There’s definitely a rightsizing going on,” says Michael King, research director, mobile and wireless, for Gartner. “By 2011, 70% of all net new ports will be wireless. People are saying, ‘we don’t need to be spending so much on a wired infrastructure if no one is using it.”

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“We’re struggling a bit to wrap our heads around what amounts to a pretty significant change in culture,” says the lead wireless technologist for a big East Coast university, who requested anonymity. Cisco is the wired and wireless network vendor. Like many other schools, this one has a wired port for every student bed. Now, 80% to 90% of these ports are idle. “Many students are clueless about what to do with a patch cord to begin with. They grew up with wireless,” he says. “So how do we react to the change, without shooting ourselves in the foot?”

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PCWorld – A study by Nielsen Online states that more than 60 percent of new Twitter users give up on the service a month after signing up. This doesn’t surprise me. The more I use Twitter, the more I realize it isn’t for everyone. Why? Because most people really don’t care what you’re doing. And you don’t care what they’re doing, either.

Twitter has gotten oodles of media attention lately, and I’m guessing that many users are signing up just to see what the ruckus is about. If Oprah and Ashton Kutcher use Twitter, it must be worth checking out, right? But once the newbies spend a few days telling the world what they’re doing in 140-character bursts — or reading mind-numbing “I’m-at-the-market” updates from friends and family — the novelty wears off in a hurry.

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PCWorld – Pure Digital’s Flip was a breakthrough product, but now it has company. We tested high-definition, YouTube-friendly pocket camcorders from Creative, Kodak, Sony, and Pure Digital and picked a champion. Here’s a guide to our roundup.

They may be tiny, but pocket camcorders are a gigantic force to be reckoned with, thanks to the rapid growth in popularity of Pure Digital’s Flip line of video cameras. Nearly 1 million Flip cams were sold in 2007, according to IDC Re­­search, and an NPD Research report named Pure Digital’s Flip Ultra the top-selling camcorder in the country last June.

Big-name companies are taking notice–Cisco ac­­quired Pure Digital for $590 million in stock in March, and major players are trotting out small, cell-phone-size pocket camcorders to chip away at the Flip’s throne, armed with the same dead-simple operation, easy sharing features, and cross-generational appeal as Pure Digital’s pioneering moviemaking device.
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These ultraportable camcorders make uploading and sharing videos very simple, usually with flip-out USB connectors and on-board software. Though the clips lose a lot of quality once uploaded to the Web, the pocket camcorders tested here are all high-definition models. That gives you greater flexibility with the source video–you can choose to view it on an HDTV or upload it to an HD-friendly Web service.

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