Hmmm... Well... I should have been more specific. The load temps I listed are a typical load, not running two iterations of Prime 95 and half a dozen other things to max out both cores. More like three or four IE windows open, Spyware scanner running, the various systray applets doing their thing, listening to some MP3s and playing my favorite RTS game. Running any of the more popular benchmarks results in similar temps.
I think too that the 80mm blowhole fan in the Lexa, even though it's only turning at around 1200rpm, helps a lot by keeping warm air from pooling in the top of the case. That was a large part of why I selected that case, other than just liking the way it looks. I previously had an Antec SX1050B with two 80mm fans in the front turning at around 2200rpm and a Panaflow 120x38mm running at 2100rpm in the back. You could hold your hand a foot behind the case and FEEL the breeze coming out of there. Serious air flow. Temps? A couple of degrees cooler, than what I have now with the Lexa, across the board. On the other hand, that was one of the loudest systems I've ever built.