Comment 15 for bug 465055

@PiK:

> It seems that the only resolution is coming back to the ubuntu 9.04.

Fortunately there is a dirty workaround:

download http://packages.ubuntu.com/jaunty/libsane (jaunty version) and install with
dpkg -i libsane_1.0.19-23ubuntu7_i386.deb

You may lock libsane with synaptics or with preferences of apt until this bug is resolved.