Did you know this is possible? Nicolas did it again. I just saw the explanation on this blog. Now you can comfortably scan multiple pages at once without sitting at the computer.
My tip: on scanning issues try to scan as user root. I had to rmmod usb-storage and usblp before it worked for me with Ubuntu 8.10 and Linux 2.6.29-rc0, otherwise I always get:
usb 2-4.3: usbfs: interface 1 claimed by usblp while 'quiteinsane' sets config #1 or
usb 2-1: usbfs: interface 2 claimed by usb-storage while 'quiteinsane' sets config #1