I followed the directions in the FAQ and fixed my mtab. I shut down the computer and mtab was exactly the way it was before, I guess in startup a new mtab is written. (this maybe a version thing)

So I made an mtab file with my hd stuff and saved it as /etc/mtab-save. I then edited /etc/init.d/bootmisc.sh and added the following two lines at the bottom of the file:

rm /etc/mtab
cp /etc/mtab-save /etc/mtab

now df works as it should.

HTH

rock