Comment 112 for bug 1073433

Russel, please read my comment https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1073433/comments/105 carefully.
I repeat: I have neither plymouth nor network-manager nor modemmanager nor wicd installed. Just plain /etc/network/interfaces. +guessnet.
/etc/network/interfaces is the native way to configure network in Linux distributions. Why should I use something else, when 'interfaces' covers 100% of my needs?
Disabling network in NM/replacing NM just hides the real bug. Problem is NOT in network manager. It is somewhere deeper (like Steve supposed, a kernel bug, or a bug in sysvinit-utils).

Today's morning I've got that 'busy' with halt:
acpid: exiting
speech-dispatcher disabled; edit /etc/default/speech-dispatcher
 * Stopping VirtualBox kernel modules
Stopping UPS power management: apcupsd exiting, signal 15
apcupsd[1444]: apcupsd shutdown succeeded
apcupsd.
 * Asking all remaining processes to terminate...
 * All processes ended within 2 seconds....
[54994.264815] init: Disconnected from system bus
[54994.484761] tg3 0000:10:00.0: wake-up capability enabled by ACPI
 * Unmounting temporary filesystems...
 * Deactivating swap...
umount: /run/lock: not mounted
umount: /run/shm: not mounted
mount: / is busy
 * Will now halt
[54995.304424] kvm: exiting hardware
[54995.305569] sd 0:0:0:0: [sda]
[54995.305929] sd 0:0:0:0: [sda]
[54995.958554] System halted.