Here's my setup: Powerbook G4, 10.5.4, WD My Passport 160gb external hdd. I did a bunch of searching and it seems that I have a unique problem. My external hdd is almost full from all of the backups that Time Machine has saved. So when I tried to delete some of the old backups (entering Time Machine, selecting the backup, click the gear icon, and choosing to delete that backup), after I enter my admin password to confirm the deletion, the backups disappear from Time Machine, however, the backup files are still on the external hdd. They never get deleted. Therefore, my external hdd is still full. So I took another route and simply deleted the folder off my external hdd that had all backup files, through the Finder. Now they don't appear on my external hdd, however, when I "Get Info" the storage space has not changed, it is still very close to capacity. Does anyone know what's causing this, or should I just reformat the drive and start over?