Kept getting a 404, so I downloaded the synaptics tarball manually. I think there is an error in the ebuild as follows: http://w1.894.telia.com/~u89404340/touchpad/synaptics- ${SYNDRV_VER}.tar.bz2 ...should be: http://w1.894.telia.com/~u89404340/touchpad/files/synaptics- ${SYNDRV_VER}.tar.bz2
Fixed when I saw the post on gentoo-user