As Fid stated, the iPad2 that is running iOS 5.1 cannot be jail broken at this time. However, do keep an eye on, or maybe subscribe to this thread: http://www.ipadforums.net/showthread.php?t=44596
We keep it up to date with the latest news and, when something comes out, it'll be updated right away. Not to mention that every iOS board, blog and news site on the planet will light up!
With that question asked and answered yet again, this thread is now closed. Thanks for your understanding.