Yet another Ubuntu respin to consider. It's optimized for for for Acer One. Found on http://kuki.me boots within 20 sec. and works great. It comes with xfce and I got very responsive support at the #kukilinux at freenode. Used it for several months now.
Only issue was that the optimized kuki kernel did not support my Huawai usb 3G modem so I changed to use the more heavy generic Ubuntu kernel.