New install of Fedora 14, all updates applied.
If a USB flash drive is plugged in, get a Not Authorized message when Nautilus tries to mount the drive. The drive does show up in Places in Nautilus.
From a terminal window, if you 'su' to 'root', then:
mount -t vfat /dev/sdb1 /mnt/usb
WILL mount the device, can 'cd' into directories, 'ls' to list files, 'cat' the files -- all OK -- so the device itself is fine.
But from a regular user account, it will not mount the drive. Did 'chown' on /mnt/usb and /dev/sdb1 so that the user owns everything. The same 'mount' command as above gives the message "mount: only root can do that". Disabled SELinux as a test -- same result.
Searched around but only similar problem was in this thread (buried in the middle): http://forum.nginx.org/read.php?30,147334
That's where the sequence above was suggested, which does work as 'root'.
Where else would permissions need to be set? And what changed? This worked automatically in previous versions of Fedora -- it would mount the device and pop up Nautilus.