I have an idea that my /etc/fstab is a real mish-mash and I don't remember how it got that way, first of all it looks like this

UUID=9EB80807B807DD21 /media/Storage ntfs-3g users 0 0
UUID=a60397fd-964a-45b1-ad35-53c8a4bee010 / ext4 defaults 0 1
UUID=1764825d-b8ba-4620-b3b0-e979b6f4f5c4 swap swap sw 0 0
UUID=255DA1E406E29DBC /media/sda2 ntfs-3g defaults 0 0
UUID=2CCCF161CCF1262C /mnt/sda1 ntfs-3g umask=000 0 0
/dev/fd0 /media/floppy0 vfat noauto 0 0

I started with an old XP install on disk /dev/sda that I don't use anymore but didn't want to delete, so I shrunk the XP partition, added a NTFS partition that would be common to both systems (Labeled it "Common" in XP), then installed Lucid on an extended ext4 partition.
On this disk of course the ext4 system partition comes up as /, the go between partition auto-mounts on /media/sda1 but shows up in Nautilus as COMMOM, while the XP system disk does not show up in Nautilus, but I can get to it by navigating to /mnt/sda1.

A second hard drive (/dev/sdb) that I stuck in was already formatted NTFS with a bunch of stuff and labeled "Storage". It auto-mounts to /media/Storage but another un-mounted disk also shows up in the Nautilus device area called Storage but it can't be mounted (Here and in the "Places" are the only times it appears)

I would primarily like this non-existant (or already mounted depending on how you look at it) disk to not show up, but I wouldn't mind an explanation of why one labeled partition auto-mounts to a /media mount point but shows up by label, one does not show up as mounted at all but mounts to a /mnt mount point and is there for navigation, and one is mounted to a directory of the same name as the label. I would love to have some consistancy / direction on what is proper in this circumstance.

No doubt I caused this with the fstab but I really don't remember what my rational was if I edited it manually