Comment 9 for bug 218357

I don't think that this is a duplicate of bug #213754.
This only happens to me when starting the system , and not on reboot. Rebooting the system goes fine.
In bug #213754 they talk about they can't reboot.
I have found that this happens to me when I have connected my usb 3G modem (option_icon that uses "option" and "usbserial" kernel modules).
If I disconnect the usb modem's cable the system boot up without hangin'.