I found the following bug in Vista Explorer:
I opened a folder with three subfolders holding some video-files.
I selected and cut a subfolder and pasted it to another partition on my HDD.
While the moving was in progress I selected and cut another subfolder. This
subfolder was dimmed and I waited for the first process to complete.
When finished the first subfolder disappeared, the second one (the dimmed
one) moved left but was not dimmed any more, and the last one moved into 2nd
position and got dimmed.
I was astonished but I went on and pasted the subfolder to the destination.
It worked as expected and the right subfolder was moved.
It was only a bug in screen: the wrong folder was dimmed but the right
folder was moved.