Remember when we all thought the Facebook feud between Mark Zuckerberg and the Winklevoss twins was over? Well that was only yesterday, and we thought wrong. After dropping the Supreme Court appeal yesterday, the Winklevosses took the case to federal court in Boston today.

Tyler and Cameron Winklevoss went to Harvard University with Facebook CEO Mark Zuckerberg. When creating social networking site HarvardConnection (which was later renamed "ConnectU"), the Winklevosses had asked Zuckerberg to join their team after losing their programmer. He agreed and allegedly entered into an oral contract with the twins and their partner Divya Narendra. But over the following two months, Zuckerberg created his own social networking website called thefacebook.com while corresponding with the Winklvosses and Narendra about HarvardConnection.

Zuckerberg's site launched on February 4, 2004. The Winklevosses found out about it two days later and filed a lawsuit later that year.

The Winklevosses won a $65 million settlement in 2008, but filed another lawsuit in 2010 claiming that a friend had lied about the value of Facebook. In April 2011, 9th U.S. Circuit Court of Appeals Chief Judge Alex Kozinski ruled that the Winklevosses must accept their previous settlement. 

The Winklevosses were then seeking Supreme Court review, but dropped it in a filing with the U.S. Court of Appeals for the 9th Circuit in San Francisco yesterday. 

But apparently that wasn't the end of this drawn-out litigation. Today, the Winklevosses decided to ask a federal court in Boston whether Facebook "intentionally or inadvertently suppressed evidence" in regards to instant messages that were allegedly sent from Zuckerberg.

The instant messages the Winklevosses are referring to are those allegedly found in Zuckerberg's computer when Facebook's legal team conducted a search. One message outlined what he planned to do about HarvardConnection.

"I'm going to [expletive] them," wrote Zuckerberg. "They made a mistake haha. They asked me to make it for them. So I'm like delaying it so it won't be ready until after the Facebook thing comes out."

The Winklevosses noted that they wouldn't have settled for the original settlement had they known about the instant messages.