It goes like this: I often switch my view to detailed and then press the icon for calculation of size (ALT+F9). This gives me a list of folders / files with their sizes, which is hateful when I'm looking for the things that eat my hard drive space
But what I do not see is the overall size of the folder in which these sub-folders or files are in. That
thing at the top has no size specified, although FC could just simply add the sizes that are already calculated and display it that now empty space