I can't make my CanoScan FB630u USB work with any version of sane. I've already tried removing everything but "canon630u" from /etc/sane.d/dll.conf. The scanner is correctly detected, but when I press (in XSane) preview or scan, it freezes indefinitely, without any error message (not even from the console).
Sorry, we only package sane, we don't write it. Please ask in the forums or contact the email address mentioned on "man sane-canon630u" or check http://canon-fb630u.sourceforge.net/