[SOLVED] rootfs full? how come?

[anthonyonions]

I've just tried downloading a couple movies, and its jsut reported that there is no space left on the SD card.

Filesystem Size Used Avail Use% Mounted on
rootfs 7.3G 7.1G 0 100% /
/dev/root 7.3G 7.1G 0 100% /
devtmpfs 201M 0 201M 0% /dev
tmpfs 41M 556K 40M 2% /run
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 81M 0 81M 0% /run/shm
/dev/mmcblk0p1 34M 14M 21M 41% /boot
tmpfs 81M 0 81M 0% /tmp

What is likely to have filled that up?

Seem to be having nothing but problems since I did a 'sudo shutdown -h now'

Any advice is greatly appreciated!

Thanks
Ant