Chris Hartjes has posted about an event happening in Buenos Aries in December 2008 - CakeFest (#2):

The CakeFest site as been updated to announce pre-registration and other information about CakeFest #2, which will be held in Buenos Aries, Argentina at the beginning of December.

As of this post, the speakers haven't been selected (want to give a talk? The Call for Papers is still open through June 13th, 2008!) but you can find out more about the conference and the location on the conference website.