If there is one thing I cant stand is a computer humming needlessly in the background. I usually set all my boxes to drop into suspend mode after an hour of no use. Recently I installed Ubuntu Dapper Drake on one of my boxes, it happens to be an Asus a7n8x-deluxe. Enabling WakeOnLan with ethtool did not help. Well today I found the fix, this link will tell you how to install nvidia's own ethernet drivers and how to disable the included forcedeth drivers for good. I followed the instructions, rebooted and then shutdown my box. I ran etherwake from my other workstation and wouldn't ya know… it fired up!