the backend but with the USB layer.
[1] http://lists.alioth.debian.org/pipermail/sane-devel/2011-January/028060.html
[2] http://lists.alioth.debian.org/pipermail/sane-devel/2011-January/028091.html
Hope this helps,
--
Olaf Meeuwissen, LPIC-2 FLOSS Engineer -- AVASYS CORPORATION
FSF Associate Member #1962 Help support software freedom
http://www.fsf.org/jf?referrer=1962