ciao
lanciando il comando dmesg mi da questo messaggio riguardo l'usb...

usb 2-3: reset full speed USB device using address 2
scsi: Device offlined - not ready after error recovery: host 0 channel 0 id 0 lun 0
USB Mass Storage device found at 2
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
inserting floppy driver for 2.6.8.1-10mdk
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
usbcore: registered new driver hiddev
usbcore: registered new driver usbhid

ho lanciato il comando
modprobe sg (che prende)
modprobe sg_mod (a cui da errore..fatal modul don't found)

grz
fabio