I have the same problem on 13.04, which is solved by 2 steps (as mentioned above): 1) uninstalling ureadahead or adding "console none" to /etc/init/ureadahead-other.conf 2) killing dhclient in umountfs.
Indeed, why it has not been fixed for "years"....
I have the same problem on 13.04, which is solved by 2 steps (as mentioned above): ureadahead- other.conf
1) uninstalling ureadahead or adding "console none" to /etc/init/
2) killing dhclient in umountfs.
Indeed, why it has not been fixed for "years"....