ah, it was the du command. got it.
So, I have 150gigs being used by /media. In that folder are cdrom, floppy, and USB_BACKUP, usbdisk, usbdisk1 and usbdisk2. I'm assuming that is the culprit. ok to delete all that?
also have 15gigs being used in /mnt. Which contains: bootstrap-console-backup dar2 floppy smb