Ok, so my Macbook was getting low on space but I still had a few gigs left. I wanted to show the first episode of this anime to a friend, so I grabbed a big torrent intending to only have it download the first file. I believe my error occurred due to it attempting to allocate the full space for the torrent before I could tell it not to download all files. In any case, here's my situation now:
The df command shows 100% usage with about 900mb free. I've deleted a good 20-30 gigs of junk and this does not change. I went through Vuze and told it to delete the torrent AND all data. My drive is still full. In the Activity Monitor, under disk utilization, there are two "disks" in a drop down -- "Macintosh HD" and my user account. The results for Macintosh HD are similar to what is shown by the df command. The info for the user account shows usage of over 400gigs when my drive is only a 250.
So it seems no matter how much I delete, it stays full. Anyone got a clue what I should do? Thanks.