Speaking of "power management", I just installed Win 7 RC last night. Much to my surprise, the vanilla install does some default power management things I didn't much care for.
By default, my Desktop PC was set to "Balanced", was set to SLEEP after 20 minutes, and the CPU was set to throttle itself before increasing fan speed ("Passive Cooling").
I had to manually configure it to "Active Cooling" so it would increase fan speed before it throttles the CPU, had to manually setup a Performance setting, and turn off all the SLEEP and Hybrid Hibernation settings. Hopefully this isn't what Microsoft and Intel conspired to set up and call "power management".
Reinstalled Age of Conan, and left my PC on overnight to let it download it's 3GB worth of updates. Much to my surprise, my system was off in the morning, and had never updated (thanks to the default Sleep setting).