Comment 0 for bug 429777

A freshly set up ubuntu (9.04 - but also the version before) on a Laptop with 3g Modem attached/integrated requires to set a Username & PW in the Settings for the 3G modem (via the networkmanager icon).
Even if you do not have a password!
If you enter any Username & PW you like, this (fantasy) login gives you access to the 3G provider.

This worked for me:
Fujitsu siemens U9200
with integrated 3G modem (Huawei)

Also for a guy with a Lenovo Notbook and one external (Huawei) modem. I actually found this "solution" in a forum entry from this guy. After i allready tried a third party workaround, that worked on Ubuntu 8.04 but not on the following two distributions.

If i can assist with any further information, please don't hesitate to email.