Description of problem:
I installed Fedora Core 5 test 3 to a reiserfs root partition, now the mount
command is behaving pecularly.  'mount' by itself generates no output.  Attempts
to mount additional reiserfs partitions results in the error "mount: Operation
not supported".  Attempts to mount ext3 partitions generate the message "can't
link lock file /etc/mtab~: Permission denied (use -n flag to override)", but the
mount is successful.

Version-Release number of selected component (if applicable):
mount (util-linux 2.13-pre6)

How reproducible:
completely

Steps to Reproduce:
1. Install FC5t3 using "linux acpi=off reiserfs" to reiserfs root partition
2. attempt to execute commands below
3.
  
Actual results:

[root@liz64 ~]# mount
[root@liz64 ~]# cat /etc/fstab
/dev/sda9               /                       reiserfs defaults        1 1
/dev/sda5               /mnt/sda5               reiserfs defaults        1 1
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
sysfs                   /sys                    sysfs   defaults        0 0
/dev/sda6               swap                    swap    defaults        0 0
[root@liz64 ~]# mount /dev/sda5
mount: Operation not supported
[root@liz64 ~]# mount -t ext3 /dev/sda10 /mnt/sda10
can't link lock file /etc/mtab~: Permission denied (use -n flag to override)
[root@liz64 ~]# ls /etc/mtab~
ls: /etc/mtab~: No such file or directory
[root@liz64 ~]# mount
[root@liz64 ~]# ls /mnt/sda10
bin   dev  halt  lib    lost+found  misc  net  proc  sbin     srv  tmp  var
boot  etc  home  lib64  media       mnt   opt  root  selinux  sys  usr
[root@liz64 ~]# ls /mnt/sda5
[root@liz64 ~]#
     
Expected results:
'mount' lists filesystems currently mounted
other mount commands succeed without generating errors

Additional info: