[NEW]I just ask my friends in China to visit the site and it turns out to be ok. Don't know how and when it recovered. Another funny story is python.org is blocked for a long time. Somebody say it is the version number 2.6.4; Somebody claim it's because GAE(could be set up as proxy); The other part believe it's because python.com...... We don't know which is the truth or neither of them.