Barence writes "Microsoft's decision to limit Windows 7 Starter Edition to running only three concurrent applications could force up the price of netbooks as many manufacturers opt for the more expensive Home Premium. The three-app rule includes applications running in the background but excludes antivirus, and the company claims most users wouldn't be affected by the limit. 'We ran a study which suggested that the average consumer has open just over two applications [at any time]. We would expect the limit of three applications wouldn't affect very many people.' However, Microsoft told journalists at last year's Professional Developers Conference that 70% of Windows users have between eight and 15 windows open at any one time."