Why make excuses?
This is really nothing new, and highly unsurprising. Mainland China has consistently blocked the ability of the majority of its citizens to have access to non-Official news and is highly restrictive of the individual's ability to spread ideas that are not explicitly approved. I don't get why people are so willing to excuse and explain this away as a corporate plan or DNS error - the Government is blocking the site. (Thankfully, at least, the PRC's IP blocking seems to be provincially-based, and is not universally managed, meaning some people in Shenyang get sites that those in Beijing don't, and vice-versa.)
While the Government has become much more savvy about how it restricts individual freedoms (expression, in particular) since the 1989 Tiananmen democracy protests, it has also become much more effective in its "fight" against dissenting opinions. No longer does the government arrest en masse, instead, they make surgical arrests and detentions. Internet access is much more widespread in urban areas, but the use and navigation is monitored and restricted. Many iconic American websites are blocked, as are British and a majority of western news sites are blocked.
It also makes a great deal of sense as to why the Beijing regime would fear Apple - although a relatively elite brand, it often advertises via both populist and rebellious messages and it seeks to ease the ability to share and present information. Final Cut and iMovie, in particular represent a great threat in a nation suffering widespread illiteracy and generally poor education amongst the majority of its citizens. Images carry much greater impact than any pamphlet, newsletter or book.
In part, this is because of the continued secessionist desires of the muslim Uighur people in the west and because of the increasing use of well-crafted homemade video messages within the largely uneducated Islamic world - the Chinese fear the impact that a well-made, persuasive and iconic underground video might have if it were to spread, not just amongst the already discontent Xinjiang province, but through just part of China's larger population.
(Few people realize that the primary reason why the Daniel Pearl video so shocked defense analysts was not because of the brutality of the murder, but the relatively sophisticated and compelling arrangement of the message portions of the video, which used complex image layering, synchronized music and very effective titling - elements previously unseen in video messages released by islamic fundamentalists which had a persuasive impact in western Pakistan, the eastern Caucuses and other parts of central Asia where literacy is low and the faith in images runs high - something which Hezbollah and Hamas have been relying upon for years with billboards and flyers.)
Beijing is also acutely aware of what happened in the Soviet Union, when dissidents were ignored and then deported -- a large network of sympathizers upset with the regime's repression used an underground network of hand-copied and mimeographed pages to spread the ideas of Sakharov and Soletsnetsin, even while in exile. The mainland government realizes that you can't arrest a concept, you can't kill ideas. Imagine what one person could do with a popular website and a small web-movie.
Even Hong Kong is being pulled closer and closer to the political and personal repression suffered by the mainland, with restrictive elections, mainland military presence and the recent "visit" by the largest PLA Navy flotilla to sail in years.
And I take exception to those people who make the "amusing" inference that somehow what is going on in the U.S. is worse. No, I'm not happy with the practices of the current, very secretive and stubborn administration, but we have it 10,000 times better here than every single person in China -- and come November, we at least get the choice to throw these clowns out on their arses, unlike the Chinese mainlanders, who didn't even get a say in who the CPC Central Committee chose (Hu Jintao) to act as Jiang Zemin's personal puppet after Jiang reached the mandatory 'retirement' age (Jiang still controls the military, a first amongst 'former' PRC leaders).