An uncertain economic environment is causing companies to take a more sceptical look at new technology investments, says Anne Mulcahy, chairman and chief executive of Xerox, the US documents company.

Her comments, in an interview with the Financial Times, are the latest indication that fallout from the subprime mortgage crisis and concerns about a US economic slowdown could cause companies to rethink spending on big IT projects – a key source of sales growth for technology companies.