look at mine:
abcsmart@abcsmart:~$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sdb3 19G 4.3G 14G 24% /
varrun 1010M 148K 1010M 1% /var/run
varlock 1010M 0 1010M 0% /var/lock
udev 1010M 72K 1010M 1% /dev
devshm 1010M 12K 1010M 1% /dev/shm
lrm 1010M 39M 971M 4%
/lib/modules/2.6.24-23-generic/volatile
/dev/sdb1 228M 95M 122M 44% /boot
/dev/sdb6 71G 30G 38G 44% /home
gvfs-fuse-daemon 19G 4.3G 14G 24% /home/abcsmart/.gvfs
/dev/scd0 7.7G 7.7G 0 100% /media/cdrom0
/dev/sda1 29G 28G 263M 100% /media/disk
Im assuming that your /home is in sda1.
abcsmart@abcsmart:~$ sudo fdisk -l
[sudo] password for abcsmart:
Disk /dev/sda: 40.0 GB, 40020664320 bytes
255 heads, 63 sectors/track, 4865 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x157e157d
Device Boot Start End Blocks Id System
/dev/sda1 1 3824 30716248+ 83 Linux
/dev/sda3 4714 4865 1220940 5 Extended
/dev/sda5 4714 4865 1220908+ 82 Linux swap / Solaris
Disk /dev/sdb: 203.9 GB, 203928109056 bytes
255 heads, 63 sectors/track, 24792 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0e1fe4bf
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 30 240943+ 83 Linux
/dev/sdb2 2521 24792 178899840 5 Extended
/dev/sdb3 31 2520 20000925 83 Linux
/dev/sdb5 24514 24792 2241036 82 Linux swap/ Solaris
/dev/sdb6 2521 11857 74999389+ 83 Linux
What is in your /home folder?