hello i own a canon 636u and use it with linux for some times. i saw that the driver is untested for my device. So i want to give a replay the driver is working fine on the 636u. it is possible to scan color, b/w with up to 600dpi. So the device is fully supported. i only have sometimes a strange behaviour with xsane. (looks like every line the linefeet is move by one pixel to the left) but i can not reproduce it. after restart the app everything works fine again. with shell-tools i never had any problems so i think this could be a little nasty bug in the frontend. It would be great if someone can changed the 'untested' to 'good'.
best regards