As I suspected there would be some interest in this possibility. I agree with gvdIAD about spring or fall but from my sked spring is already booked up so I propose we take a straw poll on doing it:
Columbus Day Weekend, 7 thru 10 October 2011
That would put it outside of the really hot time of year and also capture a Bank Holiday in the US so folks could travel home on Monday and not lose too many days at work