Determining What's using all the disk

I tried to upgrade a package and it failed, so after digging around I noticed the my root partition is 100% full.

This is a Etch system. Here is a copy of the output of dff -h

Code:

db:~# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/db-root
                      268M  268M     0 100% /
tmpfs                 189M     0  189M   0% /lib/init/rw
udev                   10M   52K   10M   1% /dev
tmpfs                 189M     0  189M   0% /dev/shm
/dev/sda1             236M   13M  211M   6% /boot
/dev/mapper/db-home
                      186G  825M  176G   1% /home
/dev/mapper/db-tmp
                      380M   11M  350M   3% /tmp
/dev/mapper/db-usr
                      4.7G  482M  4.0G  11% /usr
/dev/mapper/db-var
                      2.9G  346M  2.4G  13% /var
db:~#

As you can see everything is setup on on separate partitions.

How can I figure out what is burning up all the hard drive space on the root partition?

Thanks for any help!!!!

 

Code:

cd /
du -hs *