There's never a quiet moment with Facebook. In the past couple of days, the social network has struck a deal with China, had a settlement enforced in a court of appeals, and come under fire from a man claiming 50% ownership.

China is sometimes a hard nut to crack. Facebook is breaking the barrier by way of a deal with Chinese search engine giant, Baidu, according to reports. The deal will create a new social networking site that won't have any connection with the Facebook we know and love, which has been blocked in China since 2009, The Street explains.

Meanwhile, twins Cameron and Tyler Winklevoss had something to say about a settlement from 2008. They claimed that information was withheld from them regarding the value of the shares they received during the settlement, taking their gripe to the 9th U.S. Circuit Court of Appeals. This was to no avail, however, as a three judge panel saw fit to side with the original settlement. The panel felt the twins were sophisticated enough negotiators, aided by lawyers no less, to see through a deception like they described, according to Reuters. Chief Judge Alex Kozinski was quoted saying, "At some point, litigation must come to an end. That point has now been reached."

Unfortunately for Mark Zuckerberg, that's not the only legal battle he has to worry about. A man named Paul Ceglia has just filed a bunch of new evidence in his case against the Facebook CEO which began last July. Ceglia has now brought to light a slew of emails that don't paint a very pretty picture for Zuckerberg, and he's employing the services of a much larger law firm than the one he filed with last year. Facebook's response at this time, though, is that the emails are fake and Ceglia is a "scam artist," reports Business Insider.

Does the ol' Facebook have reason for concern?