I had this problem when I ran out of space/wanted to use a new partition for my home directory. I changed fstab, but without going into detail, the change to fstab stopped me from viewing my existing /home directory, i.e. I remounted my new volume over the old /home directory. I puzzled for ages over this and in the end I didn't change fstab but instead I put a soft link in the home directory to the actual directory I wanted to use. (On the other partition).

This works but I bet it's not the correct way to do it! I expect you would have problems as you add new users, but this is no problem for me as I am the only user!

Stu.....