I'm using raring and also having the issue of shutdown/restart hanging for a short time due to "mount: / is busy".
I made a script that executes "ps -Af" on shutdown/reboot and writes it to a log file. (see attachment) There's a long line containing "/sbin/dhclient"; I presume that indicates dhclient being the root cause? ** Attachment added: "log file of ps -Af during shutdown/reboot" https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1169614/+attachment/3743585/+files/process.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1169614 Title: /etc/init.d/umountroot: "mount: / is busy" due to dhclient is not stopped To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1169614/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
