I upgraded from 13.04 to 13.10. I have a dual boot with Win 7, which works perfectly well. After the upgrade, even as admin I am unable to mount my interal hard disks. (when i log in as a regular user I am asked to authenticate) The drive is shown, however on clicking it gives a message - "This location could not be displayed." with the added info 'You do not have the permissions necessary to view the contents of "Data".'