Go into gconf-editor and navigate to /system/storage/default_options/vfat/mount_options, and then remove the "usefree" option from the list. Exit gconf-editor, and try hotplugging your drive again. It works :-)
So I did APPLICATIONS --> SYSTEM TOOLS --> CONFIGURATION EDITOR --> opened SYSTEM --> STORAGE --> DEFAULT OPTIONS --> right-clicked on MOUNT OPTIONS --> EDIT KEY --> removed USEFREE option from the list.
I don't know if this helps, but for my USB drive, the solution to Bug #151025 worked. /bugs.launchpad .net/ubuntu/ +source/ gnome-mount/ +bug/151025 details as follows:
https:/
HERE'S THE FIX: ------- ------
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Go into gconf-editor and navigate to /system/ storage/ default_ options/ vfat/mount_ options, and then remove the "usefree" option from the list. Exit gconf-editor, and try hotplugging your drive again. It works :-)
So I did APPLICATIONS --> SYSTEM TOOLS --> CONFIGURATION EDITOR --> opened SYSTEM --> STORAGE --> DEFAULT OPTIONS --> right-clicked on MOUNT OPTIONS --> EDIT KEY --> removed USEFREE option from the list.