i've the problem with butterfly, that contacs with an address other than @hotmail.com don't have the button "msn chat" to press. also going through conversations -> new IM i can click on those, but no new chat windows will appear. but if they begin to chat with me i can write back, and i can use that conversation to begin to chat with them, too...
(also the problem, that deleted contacs will reappear...)
will try haze right now.