I've had two weird incidents when the thing just locks up and weird multicoloured lines are displayed all over the screen. The second time, I made a video, and I may try to upload it if people ask...
In trying to figure out what's causing this, I noticed in Everest that my CPU temperatures are in the mid-50 degrees (C) and the CPU diode reports 75-80C. I'm used to LGA775 chips in midtower cases, so to me, those temperatures are obscenely high. But maybe it's normal for Atoms?
This is a one-month-old 1012 with 160G HD, the normal screen (unfortunately), 2 gigs of RAM (upgraded myself), the Atheros N wifi, bluetooth, W7 Pro (upgraded from starter) with Aero Glass, and that's about it.