I thought the USB problem was only with mice, but I find that Fisher doesn't detect my Epson Perfection 610 USB scanner (Model G750A) during install, or "post-install". (SANE *is* installed). Following directions that I used previously, I *am* able to use the scanner by manual modification of some system files, including copying or linking xscanimage into the `/gimp~ /plugins directory
The installer does not configure such hardware. In addition, hotplugging was broken in the beta - it should now insert the proper module, but it will not configure your scanner.