Hi Jon,
we're not ready to do this right now -- I suggest either staying with CC hosting or transitioning to Referata until we are (if you still want to move at that point). I'm happy to restart these conversations mid-August as we begin to get more serious about our labs effort. I targeted end of 2011 for a migration for a reason -- I do think Acawiki needs stable/performant hosting, and it needs to develop a real community, before we can move it over, and we need to have our ducks in a row to ensure a smooth transition.
Thanks, Erik