According to the Daily Telegraph,

It took took five years and $6bn (£3bn) to develop, but Microsoft’s Vista operating system, which was launched early this year, has been shunned by consumers – with computer manufacturers taking the bizarre step of offering downgrades to the old XP version of Windows.

Microsoft founder Bill Gates speaking during the press conference at the Microsoft Windows Vista operating system launch
Microsoft launched the Vista operating system to great fanfare in January, at least a year late

A note on the electronics retailer website Dabs.com reads: “If you’re not ready for Vista, you can downgrade to Windows XP without affecting your Sony VAIO warranty and switch back to Vista at any time.”

Dell took a similar line earlier this year when it brought back XP on a range of computers for its US customers in response to a deluge of online complaints.