Logitech Stereo USB Headset 250?

[Adam Funk]

Does anyone know how to get a Logitech Stereo USB Headset 250 to work
on Ubuntu?  Sometimes when I plug it in /dev/audio1 appears, sometimes
not.  The device briefly appeared in the xfce4 volume control device
pull-down, but hasn't appeared since.  Sometimes plugging it in makes
these lines appear in syslog

Jul 31 11:45:48 localhost kernel: [18303142.420000] usb 3-1: new full speed USB device using uhci_hcd and address 2
Jul 31 11:45:48 localhost kernel: [18303142.816000] usbcore: registered new driver snd-usb-audio
Jul 31 11:45:55 localhost kernel: [18303149.236000] usb 3-1: USB disconnect, address 2
Jul 31 11:45:57 localhost kernel: [18303151.744000] usb 3-1: new full speed USB device using uhci_hcd and address 3

but not always.  I'd appreciate any debugging suggestions.

-- 
Thanks,
Adam