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While its rivals Vodacom, MTN and Cell C struggle with flat growth in a tough economic environment, Telkom is killing it in the mobile business, showing astonishing growth in subscribers in the past year.

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Two decades ago, only spies and systems administrators had to worry about passwords. But today you have to enter one even to do humdrum things like turning on your computer, downloading an album or buying a book online. No wonder many people use a single, simple password for everything. Analysis of password databases, often stolen

The main problem with both wind and solar energy is not their cost (which is falling satisfactorily with every passing year) but their intermittency. Supplying power to the grid when the air is calm or the sun below the horizon means storing a surplus when the day is blustery and the sun is up. And, at the moment, this is expensive. Cheap and

BlackBerry maker Research in Motion has lost its home-field advantage in Canada to Apple for the first time ever, another sign that the company is almost hopelessly broken when it comes to smartphone innovation. The long-time co-CEOs of RIM, Jim Balsillie and Mike Lazaridis, resigned from the company in January after 20 years and were replaced