In the option "Contact list transparency" there is a bug, you will see that when searching for a contact, the list will be distorted.
Not present in the video chat windows "transparency", but there is also a bug where the window is distorted.
http://www.youtube.com/watch?v=zUytsv5jBp0
*Windows xp sp3
*Msn 2009 [14.0.8064.206]
*Messenger Plus Live [4.82.368]