Missing Disk Space?

[Freesbie]

I was just wondering if anyone could tell me why I am missing so much space on my /home partition(approx 15G).

Thanks for your time, I appreciate it.

Freesbie

$ uname -a
FreeBSD alexander.rmnanetworks.com 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Sun Mar 12 05:47:59 MST 2006     root at alexander.rmnanetworks.com:/usr/obj/usr/src/sys/ALEXANDER  i386

$ df -h
Filesystem     Size    Used   Avail Capacity  Mounted on
/dev/ad0s1a    7.7G     47M    7.1G     1%    /
devfs          1.0K    1.0K      0B   100%    /dev
/dev/ad0s1d    201G     13G    173G     7%    /home
/dev/ad0s1f    9.6G    2.0G    6.8G    22%    /usr
/dev/ad0s1e    4.8G     56M    4.4G     1%    /var