China’s Internet censorship system, known to most of its opponents as the Great FireWall or GFW suffered an outage last night.
According to comments on this website and chatter on Twitter, Youtube, Facebook, Danwei.org and Twitter itself were all accessible in China from about midnight last night until about 3:30 am.
I cannot confirm if this was only on CNC ADSL connections, or all Internet connections in China.
Rumors on Twitter say that the cause was the installation of some kind of upgrade to the GFW software.
Update: Apparently Guangzhou did not enjoy the GFW breakdown.