Dropbox being Blocked in China

About two hours ago, in the forums, it seems that Dropbox has been blocked by China.

There really isn’t any reports on why this has happened or why Dropbox has joined the ranks of Twitter, Facebook and the rest, but one could probably speculate the fact that since they do allow sharing of files and some public urls of files, which could be used in anti-government actions. However, there hasn’t been anything that has surfaced so no one really knows why this action has been taken.