Ok, ignore for now my previous two posts. The two machines "reliably" producing "mount: / is busy" have the packet "plymouth-x11" installed. When uninstalling this packet on these machines the error goes away.
At the moment I suspect that those cases which can be solved by means of disabling the "Available to all users" have a different cause. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1019347 Title: A message: "mount: / is busy" appears every time shutting down or rebooting. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1019347/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
