Hi
When you remove a programm the settings (like %Appdata%) or the folders in C:\Programms wont be deleted. It would be helpful, when CCleaner search this files and delete them.
Example (I hope eyerybody undarstand what I mean):
You install Programm X:
C:\Programms\X\X.exe
C:\Documents\User\Appdata\X\X.settings
C:\Documents\User\Documents\X\helloworld.x
Now you remove this Programm, but the setup can't delete everything:
C:\Programms\X\ [empty]
C:\Documents\User\Appdata\X\X.settings [useless]
C:\Documents\User\Documents\X\ [empty]
CCleaner search now the empty folders and delete them. CCleaner scan also the folders like Appdata and search the Programm, that belong to this folder. If the programm do not exist, CCleaner delete it.