PCs cannot afford an OS that devours memory. It raises costs. Moreover, if you do not have a graphic card, features like 'Arrow' do not work well. So, a customer has to spend more on the RAM (memory) and buy an extra graphic card, which adds to the cost.

Microsoft, meanwhile, has stopped production of Windows XP, which was another obstacle in Vista's path as it was competing for sales. Despite this, reports abound of companies downgrading to XP from Vista. Microsoft, on its part, believes people are biased against Vista. So in July 2008 it introduced a web-based advertising campaign christened the "Mojave Experiment".

Participants are first asked about their experience with Vista, and then asked to rate it on a scale of 1 to 10. They are then shown a demo of some of the new operating system's features (called Mojave), and asked their opinion and satisfaction with it on the same 1 to 10 scale.

After respondents rate "Mojave", they are then told, that they were, in fact, shown a demo of Windows Vista. Microsoft claims that Mojave, unfailingly, receives a higher rating. Perception, however, can be bigger than reality at times. Vista, hence, is vacillating between Microsoft's claims of widespread customer satisfaction, conflicting research reports of success and failure, and dissenting voices from industry observers who have written-off Vista.

Microsoft is now busy with Windows 7, which includes features like advancements in touch, speech, and handwriting recognition, support for virtual hard disks, improved performance on multi-core processors, improved boot performance, and kernel improvements.

The software giant will have to ensure that Windows 7 does not run afoul of regulators. Finally, it will also have to ensure that a pared-down version of Windows 7 is available for low-cost PCs. Business Standard