time machine can use your own hard drive for backups, just check the settings to make sure its not backing up on your own hard drive, theres loads of threads on here where people have that problem.
shut off time machine, find the files it has backed up, and move them to an external... you are using your boot drive for a backup and that just doesn't work.
Are there any directories in the root of your drive besides Applications, Library, System, and Users? If so, try doing get info on them. If not, do get info on all visible directories. It'll take a very long time, but you'll be able to compare its results with the total used space on your drive and determine whether your problem file(s) is/are visible or invisible.
Did they get into a torrent program? Some of them create dummy files that take up the amount of HD space that the completed file would contain.
So miles01110 had the right idea what was causing the problem from the very beginning. Azureus/Vuze = torrent program.
BlueRevolution - again, great suggestion on the Disk Inventory X app![]()
Actually - no. Vuze does appear to be involved in this diagnosis, but with what looks like a java error (either created by the compiler of Vuze in the jar or with java itself) - it looks like it started failing at exactly midnight on 31.12.08 which is a bit strange.... hmm... anyhow...
i am pretty sure I know what miles was alluding to - the way torrent s/w works is if you want to download a 5GB file - it effectively creates a "placeholder" for a 5gb file which is, of course, 5GB in size - even before it's actually, physically downloaded anything. I was aware of this and have seen other people fall at this hurdle so to speak - so like i said earlier in my original post, i had checked the Vuze download folder for any torrents and cleared them out.
Actually, that wasn't me, but you're welcome.![]()