I hit 3.2ghz today and its very stable.  I am running the ram at the stock speed of 800mhz (for now), the bus speed is 400mhz (northbridge at 1066) and the FSB is at 1600mhz.  I knew it could run that speed and probably higher still, but I am waiting for my 60mm Panaflos and more mosfet heatsinks to come in the mail.  Then I should be able to get the ram to at least 900mhz and the processor to 3.6.  Waaaahooooo!

By the way, the e6400 Core2Duo temps topped out at 53 C.  Not bad at all.