Problems with mount_smbfs

Hi
 
When I try to use mount_smbfs I get the following error
 
/usr/libexec/ld-elf.so.1: mount_smbfs: Undefined symbol "vfsisloadable"
 
I have to mount_smbfs on my system as seen below
 
bash-2.05b# ls -l /sbin/mount_smbfs 
-r-xr-xr-x  1 root  wheel  9284 Jun  5  2003 /sbin/mount_smbfs
 
bash-2.05b# ls -l /usr/sbin/mount_smbfs 
-r-xr-xr-x  1 root  wheel  8876 Oct  7 20:53 /usr/sbin/mount_smbfs
 
If I just run the version found in /usr/sbin one time the error goes away.
 
uname info:
FreeBSD XXXXX.motd.dk 5.3-BETA7 FreeBSD 5.3-BETA7 #2: Tue Oct  5 02:09:29
CEST 2004     x_at_ <mailto:x_at_bart.motd.dk:/usr/obj/usr/src/sys/GW>
XXXXX.motd.dk:/usr/obj/usr/src/sys/GW  i386
 
I started to se this problem when I did an upgrade from a. 5.2.1 (source
from 05-feb-2004) to 5.3-Beta3
 
Can anybody se what's wrong, except for the fact that the version in /sbin/
is very old(probably from the base install of version 5.1) and apparently
not get updated when doing a upgrade ?
 
More info needed ?
 
- Tom