/etc/mtab should not exist (save as a symlink to /proc/mounts).
/proc/mounts should be updated so it contains all the information
/etc/mtab contains.
There should be no need for /etc/mtab, because it contains no info the
kernel doesn't already have.
/etc/mtab is also a special case because it *can't* move to /var.
Why? because /var could be a seperate partition!
-Matt