Some mainland academics have called on the central government to scrap the compulsory installation of internet filtering software on all personal computers sold in the mainland, saying it would violate laws on competition and consumer rights. Professor Wei Yongzheng, a well-known mainland media law expert, and Zhou Ze , an associate professor with the China Youth College for Political Sciences, have jointly proposed that the State Council review and cancel the administrative regulation, issued on Thursday. Their call comes a little over two weeks before the July 1 deadline for new mainland computers to have the Green Dam Youth Escort filter. Their suggestion came after Li Fangping, a Beijing lawyer, had asked for a public hearing from the Ministry of Industry and Information Technology, which introduced the software. The professors' letter says the regulation may have violated both the Anti-unjust Competition Law and the Anti-monopoly Law by forcing people into purchasing certain products. Professor Zhou said yesterday that they had also lodged their complaints with relevant government departments, including the anti-monopoly committee, the National Development and Reform Commission, the Ministry of Commerce and the State Administration for Industry and Commerce. They were far from alone in the fight to revoke the regulation, he said. A group of more than 20 mainland legal practitioners, network and software engineers and rights activists gathered at a 21/2-hour symposium yesterday in Beijing to discuss the introduction of Green Dam from the legal and technical perspectives, Professor Zhou said. 'Apart from me, many legal experts showed up and made relevant remarks at the meeting,' he said, adding that the participants included Zhang Qianfan, a law professor at Peking University; Xu Xun , a legal consultant for China National Radio; and Wang Qinghua, an associate professor with the China University of Political Science and Law. Professor Zhou said most of them agreed that compelling the use of the software was not only unreasonable, but also technically impractical. 'The software, which is specifically tailor-made for minors, is supposed to be installed on computers for all adults. This will inevitably jeopardise our proper right to know and access information,' he said. Mr Li, the lawyer who asked the Ministry of Industry and Information Technology to address public concerns about the 'lawfulness and reasonableness' of its measure, said yesterday that he had not yet received any response from the ministry on his application for a public hearing, which he filed on Wednesday. By law, the ministry must give him a reply within a month, he said. 'If they refuse to do anything with my demand after that period, I will definitely sue them,' said Mr Li. 'For the time being, I just keep waiting for their feedback.' The proposed introduction of Green Dam sparked an outcry among millions of internet users after it was first reported early this month.