London Business School swapped second place for first with INSEAD in this year's ranking of international MBAs, which is online at:
http://www.businessweek.com/articles/2012-11-15/the-complete-2012-business-schools-ranking#r=lr-sr

In the employer survey ranking the top schools are Insead, LBS, McGill and Toronto.

One fascinating finding is that IE which comes top for student satisfaction, is bottom when it comes to intellectual capital. For Toronto, it's the other way around!