Oh yes, I am. Sorry.
I am not on my pc at the moment; but somewhere in the Control Center (I think in localization), you can set if you want the sizes in KB, KiB or Kb... (or something like that)
=> changes what you see as space

Description of the different possible values is in the configuration dialog itself..
=> such as 1 ... is 1000 ....
1 ... is 1024 .....
1 .... is 1000 with some extra fix...
If you don't find it, just say, and I'll give more detailed instructions later
