The retail sector is showing signs of a slowdown in spending on management software technology, with a number of suppliers issuing lower-than-expected earnings due to the US economic slowdown and their inability to close big customer deals. One of the market leaders, Reteck, yesterday lowered its third-quarter and full-year outlooks saying it was disappointed with its volume of new business - including six large deals which failed to close, denying the firm about $30 million in revenue.