Something is happening in China, apparently tanks were seen in the streets in Beijing and activists blogs went to overdrive

now the authority has stepping in and shutting down all "unapproved" internet activity

it seems to be linked to some dude being deposed recently, and the death of a Brit highly involved in some elite politics

wtf is going on ? markets will be crashing on Monday, be ready

BBC News - China arrests over coup rumours

Chinese police have arrested six people and shut 16 websites after rumours were spread that military vehicles were on the streets of Beijing, officials say.

The web posts were picked up last week by media outlets around the world, amid uncertainty caused by the ouster of top political leader Bo Xilai.

...

Chongqing case

China's top leaders are grappling with the biggest political crisis they have faced for years, the BBC's Michael Bristow reports from Beijing.

The country will begin a once-in-a-decade leadership change later this year. But one of the main contenders for promotion - Bo Xilai - has just been sacked, suggesting a fierce fight behind the scenes for control of the ruling Communist Party.

Mr Bo was removed from his post amid allegations that his police chief and former ally had tried to seek asylum at a US consulate.

Chinese censors had previously blocked searches on various sites for terms linked to Mr Bo.

There have also been lurid, and unsubstantiated, rumours that Mr Bo's fall was also linked to the death of a British businessman, Neil Heywood, who last year was found dead in a hotel room in Chongqing, the city where Mr Bo was Communist Party chief.
Sina, Tencent Shut Down Commenting on Microblogs - WSJ.com

Briton Who Died in China Expressed Fears to Friends - WSJ.com