After opening and closing a folder, I am unable to rename it if it contains an executable

Windows 7 x64 user.

If I try to rename/delete/etc a folder after opening and closing it, and that folder contains an executable, Windows will deny the operation with a "Folder in use" message.

If I don't open the folder beforehand the problem doesn't appear.

Fortunately the problem persists only for a few dozen seconds. After enough time passes, I can rename/etc the folder without any problem. Unless of course I open and close it again...

I have no idea why this happens. Can anyone help me solve this problem?

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