[BusyBox] mount problems

[Brendan J Simon]

I'm using busybox.0.60.2 with a powerpc linux.2.4.18-pre8 kernel.  I'm 
having troubles with the mount command.

I have a startup script that does a "mount -a".  All the mounts seem to 
fail.
    mount: Mounting proc on /proc failed: Bad address
    mount: Mounting tmpfs on /tmp failed: No such device
    mount: Mounting tmpfs on /var/log failed: No such device
Note that "mount -t proc proc /proc" works fine if run manually at the 
shell prompt.
    # mount /proc
    #

I am also trying to mount tmpfs but getting errors.  If I type "mount -t 
tmpfs tmpfs /tmp" I get a "Bad address" error.  It seems to work OK if I 
add a "-o mode=700" option.  ie. "mount -t tmpfs tmpfs /tmp -o mode=700" 
works fine.
    # mount -t tmpfs tmpfs /tmp
    mount: Mounting tmpfs on /tmp failed: Bad address
    # mount -t tmpfs tmpfs /tmp -o mode=700
    #

Any clues as to what's going on ?  I'm running the kernel and root 
filesystem from an NFS server for development purposes.  Could this be 
causing problems ???

My /etc/fstab is:
    #/dev/nftla1         /        ext2   ro,suid,dev,exec,async,noatime  0 1
    #/dev/nftla2         /var     ext2   rw,suid,dev,exec,async,noatime  0 2
    #/dev/nftla1         /        ext2   defaults    0 1
    #/dev/nftla2         /var     ext2   defaults    0 2
    proc                /proc    proc   defaults    0 0
    tmpfs               /tmp     ramfs  defaults    0 0
    tmpfs               /var/log ramfs  defaults    0 0
    #ramfs               /tmp     ramfs  defaults    0 0
    #ramfs               /var/log ramfs  defaults    0 0
    192.168.0.5:/home   /home    nfs    rw,defaults,nolock 0 0

Thanks for any help or pointers.
Brendan Simon.