Hi eveyone, just got my ep121 from the microsoft store at the mall of america and it seems good with exception to the fan... the fan runs at full throttle from start up to shutdown, plugged in or unplugged, on any of the handfull of power management settings, and/or regardless of coming out of sleep or from a cold start. bottom line is that it is always on at high speed. 1) it is really the only thing that is giving me reason to return it as it is distracting in a conference room. it sounds like the air vents on a jet plane. 2) surely, this must affect the battery life? Is mine a bad one or is this a design issue? thanks for your help.