On the other hand, some viruses have caused so much damage that a simple reinstallation of the operating system was insufficient to repair them.

CNN: Technology - Analysis: Understanding viruses

Thanks to its simplicity, gOS Cloud boots in mere seconds, allowing people to check their e-mail and perform other simple web tasks without having to boot a full operating system.

ECONOMIST: Tech.view: On the web at warp speed | The

Powered by the latest Windows Operating System, Windows 8, the Nokia Lumia 820 is a speedy handset that's beautifully simple to use.

ENGADGET: Nokia Lumia 820 up for UK pre-order: free on contract or ?380 sim-less, wireless charger thrown in