Hmm.. / is 108%!

[Lewis Watson]

This system is a production www server in an isp environment. Please let
me know if this is too {OT}..

Disk status:
Filesystem  1K-blocks    Used    Avail Capacity  Mounted on
/dev/ar0s1a    128990  128174    -9502   108%    /
/dev/ar0s1h  61934666 4572354 52407540     8%    /home
/dev/ar0s1f    257998     696   236664     0%    /tmp
/dev/ar0s1g   9289902 2486716  6059994    29%    /usr
/dev/ar0s1e   2064302  109496  1789662     6%    /var
procfs              4       4        0   100%    /proc

I had an automated script that got out of hand the other night and now I
have 108% in /.

I don't see anything out of the ordinary in / so I am not sure where to
look next. Can someone push me in the right direction?
Thanks!
Lewis