1 : This is understandable since pmount used previously shortname=mixed, and gnome-mount use by default shortname=winnt. In my opinion, the previous policy should not be changed.
2 &3 : This is due to the fact that all default settings are overwrite by the settings you define in the Volume tab in nautilus. The default for vfat is still uid=(user_uid). By removing all options in Volume tab and remounting your usb device, you'll see that. Conclusion : the default shortname option for vfat should be change from shortname=winnt to shortname=mixed -- vfat support behaves differently than with pmount https://launchpad.net/bugs/76200 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs