According to the Danish online newsletter/magazine www.newz.dk (via link) Bitlocker encryption has been broken/cracked, or at least it has become possible to discover the passwords rather quickly using a third party tool Passware Password Recovery – http://www.lostpassword.com/kit-forensic.htm
And sure enough if you visit their website you will find this statement;
“Recovers encryption keys for hard drives protected with BitLocker in minutes New”
Although this indeed sounds very interesting there seem to ba a catch, you need a memory image on which to apply the Passware Password Recovery utility. Read more here