I've just done this exact same thing for my Media partition. The only fix I've found is to mount the partition in /mnt and symlink it from my home directory.
My fstab (edited for clarity):
After editing that, I did:
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/sda1 / ext4 errors=remount-ro 0 1
/dev/sda5 /home ext4 defaults 0 2
/dev/sda6 /mnt/meeja vfat uid=1000,gid=1000,utf8 0 2
To remove the old mount, create the new one, set it's permissions and mount the filesystem to it.
~$ sudo umount /home/truant/Media
~$ sudo mkdir /mnt/meeja
~$ sudo chmod 777 /mnt/meeja
~$ sudo mount -a
To create the link in my home directory. My media partition now doesn't show up on either my Desktop or Nautilus's sidebar.
~$ ln -s /mnt/meeja/ /home/truant/Media
Hope this helps. Ask if anything is unclear.