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Microsoft's Windows OS last month took its biggest market share dive in the last two years, an Internet measurement company reported Monday, erasing gains made in two of the last three months and sending the operating system's share under 90% for the first time.

Did you know that by converting from Windows XP to Windows Vista, you are helping the environment?

Microsoft will deliver Windows Vista Service Pack 2 (SP2) to manufacturing in April 2009, two months after it issues a final test version to users, according to a Web site that accurately predicted several Windows ship dates in 2008.

It's no surprise that Microsoft has its eye on the cloud. Cloud computing, that is.

Some used PCs are being purchased not for the hardware but because people want to get their hands on a copy of Windows XP, according to industry analysts and hardware suppliers.

A federal judge in Seattle has ordered Microsoft CEO Steve Ballmer to testify in a class action lawsuit against Microsoft that alleges the company misled consumers in a marketing campaign for its Windows Vista operating system in which computers sold with an older Microsoft OS were labeled 'Vista Capable' when in fact they could only run a basic version of Vista.

Not Sarah Palin!

The Vista Capable class-action law suit is the gift that keeps on giving.

Microsoft asked a federal judge Thursday to end the class-action lawsuit that has been the source of a treasure trove of embarrassing insider e-mails that have showed the company bent to pressure from Intel and infuriated long-time partner Hewlett-Packard.

Lawyers for the plaintiffs in the Vista Capable class-action lawsuit want to grill Microsoft CEO Steve Ballmer for three hours to find out what he said to top executives at Intel, Hewlett-Packard and Best Buy when they complained about the marketing program and its after effects, court documents unsealed Wednesday show.

An Austrian security vendor has found a vulnerability in Windows Vista that it says could possibly allow an attacker to run unauthorized code on a PC.