Cannot mkdir nested directories

["Dotan Cohen" <dotancohen@gmail.com>]

For some odd reason, the ability to create nested directories has
stopped working, but I can create single directories:

hardy@hardy-laptop:~$ mkdir hello/world
mkdir: cannot create directory `hello/world': No such file or directory
hardy@hardy-laptop:~$ mkdir hello
hardy@hardy-laptop:~$ cd hello/
hardy@hardy-laptop:~/hello$ mkdir world
hardy@hardy-laptop:~/hello$ ls
world
hardy@hardy-laptop:~/hello$

This _did_ work just yesterday! I did shutdown and reboot to no avail.
How can I fix this? Thanks in advance.

Dotan Cohen

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