Stockage usb anormalement long

[Alexandre <neonoe123321@gmail.com>]

Bonjour,

lorsque je copie un fichier vers ma clef usb , le temps de copie me semble anormalement long: presque 1 minute par méga!

lsusb me donne:

---8<----8<----8<----8<----8<----8<----8<----8<---8<--
Bus 005 Device 001: ID 0000:0000  
Bus 003 Device 001: ID 0000:0000  
Bus 004 Device 002: ID 046d:08f6 ma-webcam 
Bus 004 Device 001: ID 0000:0000  
Bus 002 Device 002: ID 04a9:2220 mon-scanner 
Bus 002 Device 001: ID 0000:0000  
Bus 001 Device 009: ID 054c:019e ma-clef-usb 
Bus 001 Device 001: ID 0000:0000
---8<----8<----8<----8<----8<----8<----8<----8<---8<--

Et dmesg ne me signale rien de mauvais: 
(enfin, il me semble...)
---8<----8<----8<----8<----8<----8<----8<----8<---8<--
usb 1-6: new high speed USB device using ehci_hcd and address 9
usb 1-6: configuration #1 chosen from 1 choice
scsi5 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 9
usb-storage: waiting for device to settle before scanning
  Vendor: SONY      Model: Storage Media     Rev: 1.00
  Type:   Direct-Access                      ANSI SCSI revision: 02
SCSI device sda: 253952 512-byte hdwr sectors (130 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 00
sda: assuming drive cache: write through
SCSI device sda: 253952 512-byte hdwr sectors (130 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 00
sda: assuming drive cache: write through
 sda: sda1
sd 5:0:0:0: Attached scsi removable disk sda
usb-storage: device scan complete

---8<----8<----8<----8<----8<----8<----8<----8<---8<--
et hwinfo --usb m'indique: 

03: SCSI 500.0: 10600 Disk                                      
  [Created at block.218]
  Unique ID: MtLc.Z_3ARMCU0QC
  SysFS ID: /block/sda
  SysFS BusID: 5:0:0:0
  SysFS Device Link: /devices/pci0000:00/0000:00:10.4/usb1/1-6/1-6:1.0/host5/tar
get5:0:0/5:0:0:0
  Hardware Class: disk
  Model: "SONY Storage Media"
  Vendor: usb 0x054c "SONY"
  Device: usb 0x019e "Storage Media"
  Revision: "1.00"
  Serial ID: "AG04051200028"
  Driver: "usb-storage", "sd"
  Driver Modules: "usb_storage"
  Device File: /dev/sda
  Device Files: /dev/sda, /dev/disk/by-id/usb-SONY_Storage_Media_AG04051200028, 
/dev/disk/by-path/pci-0000:00:10.4-usb-0:6:1.0-scsi-0:0:0:0
  Device Number: block 8:0-8:15
  Speed: 480 Mbps
  Module Alias: "usb:v054Cp019Ed0100dc00dsc00dp00ic08isc06ip50"
  Driver Info #0:
    Driver Status: usb_storage is active
    Driver Activation Cmd: "modprobe usb_storage"
  Drive status: no medium
  Config Status: cfg=new, avail=yes, need=no, active=unknown
---8<----8<----8<----8<----8<----8<----8<----8<---8<--

uname -a
Linux 2.6.16-2-k7 #1 Fri Aug 18 19:48:42 UTC 2006 i686 GNU/Linux

Où est l'erreur?

En vous remerciant.

-- 
---()()()----()()()----()()()--)()()(----)()()(----)()()(---
-()----()--()-()-----()----()--)(----)(-----)(-)(--)(----)(-
()----()----()()()----()()()----)()()(----)()()(----)(----)(