I fix it on my system too changing the order umountnfs executes on inits 0 and 6 and think it may no have any problems as it says not root neither top levels mounts are unmount (the ones system need to continue shutdown properly):
# Short-Description: Unmount all network filesystems except the root file system. # Description: Also unmounts all virtual filesystems (proc, devfs, devpts, # usbfs, sysfs) that are not mounted at the top level. ** Changed in: samba (Ubuntu) Status: Incomplete => Confirmed -- CIFS/SMBFS issue (was not resolved on #207441) https://bugs.launchpad.net/bugs/211631 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs