Hah, great find, on the imx51 image I really should start googling more
Problem with Ubuntu, is it isn't touch optimised, granted it's not as terrible as Win7, but it's no Android either. I really wish the linux devs just sat together and got the whole phone/tablet/touch thing sorted. I hear even firefox is basing their mobile OS on Android UGH !! But do tell how you get along with ubuntu's touch interface.
Oh and thanks for the tip. about kobo charging,