I have the same problem, copying files to flash drives is slow (100KB/s) running Squeeze 2.6.32-5-amd64 (Debian 2.6.32-27). I have the same controller: 00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller 00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller I don't get any errors, it's just slow. Kind Regards, Paul