Comment 18 for bug 209464

As a workaround, I ran this in the terminal:

sudo chmod -R 700 /home/prophet
sudo chown -R prophet /home/prophet

And that fixed the problem for me. Substitute prophet for your own username. Interestingly, my whole home directory was marked drwxrwxrwx before this, and after it's now drwx------ as expected. But like I said, I never ran any command to change the permissions that way.