Upgraded from Ubuntu to Lubuntu 12.04 by installing the Lubuntu-desktop
If I select files on for example my external hdd, click properties I get the above
it seems I am using 174.7.GB of space, but the size of these files are 11.2 TB this is on a disk with bout 360 MB of storage.
Hopefully doing a nice clean install of Lubuntu 12.10 will fix this.