When you said this it made me pause for a second. i went back to recheck the sys requirements from an official source to be sure and couldn't really find one. O_o
i guess i can assume that the normal ubuntu requirements apply which makes it 384MB for the installer and 256MB once installed. The CPU req of course is much less firm i'm sure, it just depends how patient you are. it is however targeted at the intel atom aka silverthorne, which has a minimum speed of 800MHz. i didn't mean to mislead anyone and i'll update the my other post when i get back to my desktop.
-johnx

(posted from my n800. please forgive spelling and grammar. thanks.)