Nothing about cracking, just a problem

Even if this question might be too simple, but have you emptied all your recycle bins (like the Windows recycle bin, the Executive Software recycle bin, the Norton recycle bin, ...)? I know that the Norton recycle bin hides itself from Windows so you have no way of entering it with Windows (it's stupid, but you have to use some DOS program to change to the hidden directory and work with the files). This could be one possible solution.

"Normal" hidden files are an other possible source of your problem.

The next idea I could think of is a partition tool. Have you used one lately? I once used Paragon Partition Manager and when resizing my partition, it only resized my partition. It didn't care to make any changes to the NTFS file system. So I ended up in a 30 GB partition with 64 GB of free space and lost some files until I noticed the fatal error.

How does your "all seems to be twice" look like? Do you have all folders twice when you look at the in Windows Explorer?

[squareD]

Windows recycle bin is empty.
No Norton programs on PC, because they made too much problems, especially the Norton recycle bin.

Since I use the SpeedCommander, really all hidden files and folders are shown.
There are also no problems.

I used PartitionMagic a half year ago, as I inserted a new harddisk and increased my drive C:, but every thing went OK.

How does your "all seems to be twice" look like? Do you have all folders twice when you look at the in Windows Explorer?

No, no certainly not!!

It's strangely as described in first post.
I worked with PerfectDisk on drive C: and had problems to defragment my pagefile.sys, because there was not enough space to do so.
But this could not be, because there are no programs installed on this drive.
Just only system and those files, that couldn't be prevented to be placed there!

So I put mouse pointer on icon of drive C: and got message only 1GB free, which means 9GB in use.
Shocked a little bit about this I opened drive C: and marked whole folders and files, used right mouse button to open context-menu and asked for the size of folders and files.
The result was only 4,5GB, thus only half of above!

I took that to the cause to check all other drives and all other computers in my house...
Putting mouse pointer on icon and asking for size in context-menu results always identical values.

Regards,
squareD

[Maximus]

er...
The other thing that I got in my mind is... none had created and reserved for himself a 'quote' within your drive without telling it to you?
@digitalas: thx, I'll check it!
(if xp is installed in such hds, launch the clean manager and in advanced tell him to delete all previous restore points but last, it will give back a Gb or so, it depends)

[squareD]

@digitalas

No tool there for repairing, decreasing or minimizing MFT...
Just defragmenting, but that can PerfectDisk also.

@Maximus

Tested drive with BitDefender, TauScan and all other tools that I own...
None of this 'hunter' found something that could branch a quote of space for himself without telling me...

Regards,
squareD