Partly it is a Curious question . ( Pretty stupid though)

I am using Ubuntu 12.04 64-Bit system with Unity as DE.

I was doing a routine to free -up some memory space by manual deletion of unwanted files (mostly songs and videos) and thereby right-clicking to verify for freed space.

But doing a right-Click Properties option in Root File system shows tremendous amount of Contents Memory 140.8 TB as follows

My Ubuntu is installed on 50 GB partition with ext4 as format having only / and swap as OS installation in dual boot with Windows 7 .My Internal Hard Disk is 1TB only.

So what exactly is it showing and why is it pointing such huge memory. What are the reasons for that huge Memory show.

P.S.: Must be related to some Linux OS File System based Concept i haven't yet learned or looked into.

O/P of df -h

Filesystem      Size  Used Avail Use% Mounted on

/dev/sda8        49G   12G   36G  25% /

udev            1.9G  4.0K  1.9G   1% /dev

tmpfs           773M  860K  772M   1% /run

none            5.0M     0  5.0M   0% /run/lock

none            1.9G  784K  1.9G   1% /run/shm