I have managed to set up Astranet scanner in linux with 1.0.15 sane-backends and plustek driver. Its recognized as Umax 3400.
But I have this problem http://lists.alioth.debian.org/pipermail/sane-devel/2002-June/003504.html , which was mention 3 years back. Most of the time (while I want to scane, preview works normal) lamp gets stuck and there is loud noice coming from the scanner. Cancel scanning don't work so I must poweroff scanner. But sometimes (very rarely) scanning works (like one out of five). Is there any fix for that yet? Or any advice how to fix that?