Yup, I believe I am experiencing the same bug on Natty, again with
Huawei.

The thing is - under Lucid, when you connect the Huawei USB modem for
the first time, you get asked for a PIN. Then you can make a new
connection with your provider and connect - and default settings for
that connection will be saved under Gnome's NetworkManager. Then, if you
disconnect and unplug/plug USB, you will be asked for a PIN again;
however, at that point, you could go to NetworkManagers' "Edit
Connections", you could have clicked on "Mobile Broadband" tab, you
could have found your connection, clicked on Edit, and entered the PIN
manually there. After next reboot, when you connect the USB dongle -
*and* when you select your Mobile Broadband connection in NetworkManager
(once the dongle has been recognized), you could have connected without
being asked for a PIN; at least, that's how it is under Lucid.

Under Natty, even if I go through this entire procedure - *and* manually
enter the PIN under the respective "Edit Connections..." - I *still* get
asked for a PIN every time the dongle is *attached via USB*; even before
I click on the connection in order to start connecting! (Note that under
Lucid, the first time one is asked for a PIN, is the first time one
tries to connect - in Natty, it asks for a PIN upon USB attaching,
instead). And under Natty, the window message is "SIM PIN Unlock
requred" : "The mobile broadband device 'HUAWEI Technology HUAWEI
Mobile' requires a SIM PIN code before it can be used."

Its possible this is not a bug with NetworkManager - but a bug with
something that kicks in before it (since the prompt doesn't seem to
consult the PIN saved with the Network Connection at all - although, the
PIN prompt seems to appear at the message: "NetworkManager[499] <info>
(ttyUSB0): device state change: 2->3 (reason 0)"; and I can see before
that "new GSM device (driver: 'option1' ifindex:-1)". So maybe it's a
bug with 'option1' instead?

Or maybe not even a bug - but it is a change of policy of some kind -
maybe this is how it is supposed to work from now on? In any case, it
would be nice to know...

Cheers!

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https://bugs.launchpad.net/bugs/675039

Title:
  NetworkManager asks pin code numerous times on Huawei E1550 before
  letting me on the Internet

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