On 21 Apr 2007 21:30:12 -0700, Cato wrote:

I would really be much more
concerned if we were headed for Global Cooling and another Ice Age.

If your part of the world requires the Thermohaline Conveyor to warm
things a bit you will get your wish, as a direct result of global
warming. And it is already shutting down (it takes decades for it to
stop and start completely, but the effects begin while it is slowing
doen.