[Users] fs capacity difference

[Richard Ray]

I know I am going to feel stupid for asking this but
Hardware node and container are Centos 5.4
Kernel is ovzkernel-2.6.18-164.15.1.el5.028stab068.9
On the hardware node
[root at d3 ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg00-lvol00
                       3.9G  1.6G  2.2G  43% /
/dev/md0               99M   42M   52M  45% /boot
tmpfs                1013M     0 1013M   0% /dev/shm
/dev/mapper/vg00-lvol01
                       2.0G  744M  1.3G  37% /vz/private/3251

Inside the container
[root at d3srv ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/simfs            2.0G  1.5G  524M  75% /
none                 1013M  4.0K 1013M   1% /dev

Why is the fs 37% filled on the hardware node and 75% filled on the 
container

Richard