USB Virtual Com Port problem

[g4radio]

I am having an issue with a VCP USB device not working. I know the device works ok on XP. When I check the USB drivers I get the following response (device in question is FTDI Serial in/out) and would be grateful for any help rectifying the problem. OS is Ubuntu Studio 9.04 new install. I should add I'm not experienced with Linux and command line use but willing to learn. Device issue highlighted in bold.

user-laptop:~$ dmesg | grep -i usb
[ 0.773442] usbcore: registered new interface driver usbfs
[ 0.773476] usbcore: registered new interface driver hub
[ 0.773525] usbcore: registered new device driver usb
[ 2.848391] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 2.848425] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 2.848451] uhci_hcd: USB Universal Host Controller Interface driver
[ 2.848648] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 1
[ 2.848820] usb usb1: configuration #1 chosen from 1 choice
[ 2.848871] hub 1-0:1.0: USB hub found
[ 2.849620] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 2
[ 2.849797] usb usb2: configuration #1 chosen from 1 choice
[ 2.849850] hub 2-0:1.0: USB hub found
[ 2.850063] usbcore: registered new interface driver libusual
[ 2.850124] usbcore: registered new interface driver usbserial
[ 2.850147] USB Serial support registered for generic
[ 2.850188] usbcore: registered new interface driver usbserial_generic
[ 2.850193] usbserial: USB Serial Driver core
[ 3.180115] usb 1-1: new full speed USB device using uhci_hcd and address 2
[ 3.368843] usb 1-1: configuration #1 chosen from 1 choice
[ 3.488097] usb 1-2: new full speed USB device using uhci_hcd and address 3
[ 3.688178] usb 1-2: configuration #1 chosen from 1 choice
[ 3.824083] usb 2-1: new low speed USB device using uhci_hcd and address 2
[ 4.006780] usb 2-1: configuration #1 chosen from 1 choice
[ 4.784640] usbcore: registered new interface driver hiddev
[ 4.810164] input: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM) as /devices/pci0000:00/0000:00:1d.1/usb2/2-1/2-1:1.0/input/input4
[ 4.825232] generic-usb 0003:045E:0040.0001: input,hidraw0: USB HID v1.10 Mouse [Microsoft Microsoft 3-Button Mouse with IntelliEye(TM)] on usb-0000:00:1d.1-1/input0
[ 4.825270] usbcore: registered new interface driver usbhid
[ 4.825277] usbhid: v2.6:USB HID core driver
[ 14.352593] USB Serial support registered for FTDI USB Serial Device
[ 14.352695] ftdi_sio 1-1:1.0: FTDI USB Serial Device converter detected
[ 14.352786] usb 1-1: Detected FT232RL
[ 14.352932] usb 1-1: FTDI USB Serial Device converter now attached to ttyUSB0
[ 14.353026] usbcore: registered new interface driver ftdi_sio
[ 14.353031] ftdi_sio: v1.4.3:USB FTDI Serial Converters Driver
[ 14.516937] input: CM109 USB driver as /devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2:1.3/input/input6
[ 14.550557] usbcore: registered new interface driver cm109
[ 16.633875] usbcore: registered new interface driver snd-usb-audio
[ 4929.664106] usb 1-1: USB disconnect, address 2
[ 4929.667489] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[ 4964.872092] usb 1-1: new full speed USB device using uhci_hcd and address 4
[ 4965.064615] usb 1-1: configuration #1 chosen from 1 choice
[ 4965.069685] ftdi_sio 1-1:1.0: FTDI USB Serial Device converter detected
[ 4965.069743] usb 1-1: Detected FT232RL
[ 4965.069863] usb 1-1: FTDI USB Serial Device converter now attached to ttyUSB0
[ 5491.880122] usb 2-1: USB disconnect, address 2
[ 5494.112097] usb 1-2: USB disconnect, address 3
[ 5494.162810] cm109: cm109_toggle_buzzer_sync: usb_control_msg() failed -19

[g4radio]

Having screwed the OS I had to re-install it (at least 4 times ) and this fixed my problem so guess it was a poor install on my part.