epson stylus photo RX425 not working anymore since 2.6.22-14.47

Hi,
since an update (2007-12-22), my printer RX425 is not working anymore.
When I try to print something, some of the printer green leds switch off and a gnome balloon tip says that my printer is not connected.

I've tried to delete and recreate my printer from the cups administration panel.
I also try to complete uninstall/reinstall cupsys (apt-get remove --purge)
The printer is well detected when I plug in the printer usb cable. My multifunction printer is recognized as RX420 and it used to work well before.
The scanner is working.
Thanks for the support and sorry for my bad english.

Here the logs :

$ uname -a
Linux bene-desktop 2.6.22-14-generic #1 SMP Tue Dec 18 08:02:57 UTC 2007 i686 GNU/Linux
(I'm running ubuntu gusty)

extract from dpkg.log
2007-12-22 16:53:26 configure linux-headers-2.6.22-14 2.6.22-14.47 2.6.22-14.47
2007-12-22 16:53:26 status unpacked linux-headers-2.6.22-14 2.6.22-14.47
2007-12-22 16:53:26 status half-configured linux-headers-2.6.22-14 2.6.22-14.47
2007-12-22 16:53:26 status installed linux-headers-2.6.22-14 2.6.22-14.47
2007-12-22 16:53:26 configure linux-headers-2.6.22-14-generic 2.6.22-14.47 2.6.22-14.47
2007-12-22 16:53:26 status unpacked linux-headers-2.6.22-14-generic 2.6.22-14.47
2007-12-22 16:53:26 status half-configured linux-headers-2.6.22-14-generic 2.6.22-14.47
2007-12-22 16:53:26 status installed linux-headers-2.6.22-14-generic 2.6.22-14.47

$ lsmod | grep usb
usb_storage 73024 0
ide_core 116804 1 usb_storage
libusual 18448 1 usb_storage
usblp 15104 1
usbhid 29536 0
hid 28928 1 usbhid
scsi_mod 147084 5 usb_storage,sg,sd_mod,sr_mod,libata
usbcore 138632 10 sn9c102,usb_storage,gspca,libusual,usblp,usbhid,ehci_hcd,uhci_hcd

$ lsusb
Bus 004 Device 006: ID 04b8:080f Seiko Epson Corp.

$ ls -l /dev/*lp*
crw-rw---- 1 root lp 6, 0 2008-01-04 18:25 /dev/lp0
lrwxrwxrwx 1 root root 7 2008-01-04 18:42 /dev/usblp0 -> usb/lp0

$ tail -f /var/log/messages
Jan 4 18:44:10 bene-desktop kernel: [ 1143.612027] usb 2-2: USB disconnect, address 3
Jan 4 18:44:10 bene-desktop kernel: [ 1143.851303] usb 2-2: new low speed USB device using uhci_hcd and address 4
Jan 4 18:44:10 bene-desktop kernel: [ 1144.020438] usb 2-2: configuration #1 chosen from 1 choice
Jan 4 18:44:10 bene-desktop kernel: [ 1144.042553] input: HID 1241:1122 as /class/input/input6
Jan 4 18:44:10 bene-desktop kernel: [ 1144.042622] input: USB HID v1.00 Mouse [HID 1241:1122] on usb-0000:00:1d.1-2
Jan 4 18:44:10 bene-desktop kernel: [ 1144.477635] usb 2-2: USB disconnect, address 4
Jan 4 18:44:11 bene-desktop kernel: [ 1144.716949] usb 2-2: new low speed USB device using uhci_hcd and address 5
Jan 4 18:44:11 bene-desktop kernel: [ 1144.882086] usb 2-2: configuration #1 chosen from 1 choice
Jan 4 18:44:11 bene-desktop kernel: [ 1144.904203] input: HID 1241:1122 as /class/input/input7
Jan 4 18:44:11 bene-desktop kernel: [ 1144.904266] input: USB HID v1.00 Mouse [HID 1241:1122] on usb-0000:00:1d.1-2

$ lpinfo -v
network socket
network beh
direct hal:///org/freedesktop/Hal/devices/usb_device_ffffffff_ffffffff_noserial_printer_noserial
direct epson:/dev/usb/lp0
direct hpfax
direct hp
network http
network ipp
network lpd
direct parallel:/dev/lp0
file cups-pdf:/
direct scsi
network smb

see dmesg attachment