hi 2 every 1

im having a problem connecting my usb hdd and when im typing dmesg its giving me this

usb 5-2: new high speed USB device using ehci_hcd and address 3
usb 5-2: device not accepting address 3, error -110
usb 5-2: new high speed USB device using ehci_hcd and address 4
usb 5-2: device not accepting address 4, error -110
usb 5-2: new high speed USB device using ehci_hcd and address 5
usb 5-2: device not accepting address 5, error -110
usb 5-2: new high speed USB device using ehci_hcd and address 6
usb 5-2: device not accepting address 6, error -110
hda-intel: Invalid position buffer, using LPIB read method instead.
ath0: no IPv6 routers present
usb 5-2: new high speed USB device using ehci_hcd and address 7
usb 5-2: device not accepting address 7, error -110
usb 5-2: new high speed USB device using ehci_hcd and address 8
usb 5-2: device not accepting address 8, error -110
usb 5-2: new high speed USB device using ehci_hcd and address 9
usb 5-2: device not accepting address 9, error -110
usb 5-2: new high speed USB device using ehci_hcd and address 10
usb 5-2: device not accepting address 10, error -110

about the usb thnkx