(I'm not english speaker-writer, but give me a chance)
I'm using ubuntu precise (12.04 LTS) in my AOD270. Everything is right for me except the video (VGA, HDMI) output. Fair to say that I do not use quite much graphics and that's almost the only issue that I've noticed (on about 3 weeks of using it with Precise Pangolin) and obviously must take more than the output (the only thing that I care about video). Anyway, if I connect the external monitor before turning on the netbook it works as it only has the external monitor (showing a distorted mirror image in the netbook screen).
So it has the issue of the GMA 3600 (output, brightness, 3D, etcetera...), but I've used the rest of the hardware (WLAN, USB, audio, touchpad, etc...) and it works fine. It would be better if while installing you have a LAN conection, in case that you need some [privative] drivers from the intenet before using WLAN (STA Broadcom).
Right now I'm downloading MeeGo, for installing aside Ubuntu Precise and W7; because I read that it has drivers for de GMA 3600. I've seen other user's commentaries about changing successfully to MeeGo. I think to do it partially, just for using the video outputs, and until ubuntu or another similar linux distro have better perfoncance with the Atom N2600 and the GMA 3600.
The other general and I think minor issue is that maybe Ubuntu 12.04 run quite slowly in AOD270 (no more than W7 anyway) because of Unity. But is something of taste I think, and you can always try Xubutnu and Lubuntu.
If you hasn't buy the netbook yet, maybe an Asus [or Lenovo] is more friendly hardware for Linux.
Finally I insist: Ubuntu 12.04 works fine in my AOD270, except the known video issues.
Hope this to be usefull.