I've the same problem on https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/291333 bug.
But I had to edit /usr/share/hal/fdi/information/10freedesktop/10-modem.fdi to make NM see my dongle.
I've the same problem on https:/ /bugs.launchpad .net/ubuntu/ +source/ network- manager/ +bug/291333 bug.
But I had to edit /usr/share/ hal/fdi/ information/ 10freedesktop/ 10-modem. fdi to make NM see my dongle.