A group of Chinese consumers irked by Dell's delivery delays are launching a grassroots campaign online and is considering a lawsuit against the US computer maker.

"Since June, more than 150 consumers have posted complaints on our website," said Zhou Tao, an employee at 12315.com, a local consumer rights advocacy website. "They are now trying to gather 10,000 people to lodge complaints to local consumer associations."

The computer maker declined to reveal the number of people affected.