Extremely slow USB to USB transfer

[Jingles]

Code:

xbian@sierra ~ $ sudo -i
[sudo] password for xbian:
root@sierra:~# findmnt /lib/modules
TARGET       SOURCE                     FSTYPE OPTIONS
/lib/modules /dev/mmcblk0p2[/modules/@] btrfs  rw,noatime,compress=lzo,ssd,space
root@sierra:~# depmod -av && modprobe autofs4 ; echo $?
ERROR: could not open directory /lib/modules/3.10.23+: No such file or directory
FATAL: could not search modules: No such file or directory
1
root@sierra:~#