Comment 8 for bug 882817

I use a USB mobile internet modem and this issue occurs whether or not it has been plugged in and active at some point during my session, so I do not think that it is modem-manager causing this. I can restart if I have not logged in without a hang, but if logged in, whether network-manager has been stopped or not, I have a hang at shutdown and have to shutdown by holding the power button. This has occurred since upgrade to 11.10 via normal upgrade procedures.