On October 26, 2010, US federal court judge Kimba Wood issued an injunction forcing LimeWire to prevent "the searching, downloading, uploading, file trading and/or file distribution functionality, and/or all functionality" of its software in Arista Records LLC v. Lime Group LLC.[3][4] A trial investigating the damages necessary to compensate the affected record labels was scheduled to begin in January 2011.[5] As a result of the injunction, LimeWire 5.5.11 and newer have been disabled using a backdoor installed by the company. However, version 5.5.10 and all prior versions of LimeWire remain fully functional and cannot be disabled unless a user upgrades to one of the newer versions.[6][7] The program has been "resurrected" by the creators of LimeWire Pirate Edition.[8]
More information: http://en.wikipedia.org/wiki/LimeWire