Ok, this is kind of scary. Tonight, I plugged in my external drive and tried to do a Time Machine backup as I normally do. I noticed, however, that it was unusually fast. Checking the console log, it shows it finished fine, but only backed up a few KB. This was NOT right, asI had just downloaded a few songs. Checking in the history for my backups, it was clear it was NOT backing them up, even if I forced a backup - it simply thought they were, but it wasn't transferring any files. I disconnected the drive. So I restarted my computer and reconnected the eternal drive. Time machine went about doing it's thing. Whew, I thought - the pull down menu said backing up x of 594 MB... Looks ok, right? WRONG. After it got to 594MB, it continued upwards. "Backing up 800MB of 800MB" - the numbers were BOTH increasing. It got to "3GB of 3GB", before I decide to cancel the backup. Something was not right. Then as it canceled, it started deleting something off the external - no backups were being erased, but something was clearing out space - it continued to free up. Time Machine ended up clearing up over 40GB of space, without removing any backups. ?!?!? I started the backup manually again, and again, it's moving both eh current and maximum values at eh same time. I suspect it will probably redo that 40GB. It might be ok, it might not. I have no idea. And having no idea means having no trust. In my backup system. This frightens me. I looked back in my backup history by looking at the backup.backup files - it was clear it had NOT been backing up for the past few days, perhaps even a week, even though it was telling me I HAD been backing up. How can I trust this?