I have recently upgraded from 10.04 to 12.04. I had installed a 3G D-50 modem from CMOTECH. The program for Debian is provided by a Swedish company (ice.net). Usually after some mambo jambo of installung the libg++ libraries requested you can install it and runned in Ubuntu 8.04, 9.04, 10.04 and as far as I know in 11.04. When I upgraded and I click on the icon of ice.net it worked. However, I noticed that the usb D-50 modem was never mounted as usb and it didn't show up in the Lauchnpad or workspace (as when you plug a usb memory stick or another HD). I moved the icon from place in the launchpad and since when I click on the ice.net icon the same message appears: "please plug in your modem".
The modem works (I've tested in Windows after this) and it blinks blue (sign that it works and picks up signal).

If I type lsusb then I see that Ubuntu sees it on BUS address 006:

Bus 006 Device 003: ID 16d8:6803 CMOTECH Co., Ltd. CNU-680 CDMA EV-DO modem

I've tried wvdial without success. How can I get the D-50 usb modem mounted as in the previous versions of Ubuntu ?.

Any help will be much appreciated.

bests.

Ricardo