From Science 17 November 2006: Vol. 314. no. 5802, p. 1064 DOI: 10.1126/science.314.5802.1064a: A closer look at the Atlantic Ocean’s currents has confirmed what many oceanographers suspected all along: There’s no sign that the ocean’s heat-laden “conveyor” is slowing. The lag reported late last year was a mere flicker in a system prone to natural slowdowns and speedups. Furthermore, researchers are finding that even if global warming were slowing the conveyor and reducing the supply of warmth to high latitudes, it would be decades before the change would be noticeable above the noise.

Nothing new there, then.