It seems unlikely that upstart or resolvconf would be the problem as these are on all systems and I've never seen this issue myself. Maybe the postfix hook is doing something weird...
Can you perhaps modify /etc/init.d/networking to call ifdown with the "-v" parameter that might show where it's getting stuck during the ifdown. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1010045 Title: 12.04 hangs on shutdown deconfiguring network interfaces To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1010045/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
