Hi guys, for the record:
Canon "i-sensys" MF4140 multifunctional laserfax works at the end. PC, Debian Lenny, Sane-Backports 1.1.0, driver pixma, sane-fine-scanner: found USB scanner (vendor=0x04a9 [Canon Inc.], product=0x26a3 [MF4100]) at libusb:006:006 scanimage -L: device `pixma:04A926A3_SDF750290864P' is a CANON Canon imageCLASS MF4150 multi-function peripheral modified /etc/udev/rules/z60_libsane.rules, added: SYSFS{idVendor}=="04a9", SYSFS{idProduct}=="26a3", MODE="0664", GROUP="scanner" The thing hangs after ending xsane, a replug of the USB cable helps. Nice thing, ***VERY*** fast. Greetings, Daniel Stender