Version:           SVN r1044616 (using KDE 4.3.3)
OS:                Linux
Installed from:    Archlinux Packages

When draggin a file/folder from one view to the other it is of course ok to copy/move the file to a subfolder if you actually dragged the file/folder onto a subfolder. But when you drag a file/folder to an empty space BESIDE the subfolder it should not copy/move it into the subfolder. This is a bit complicated to explain so I'll try to refine my explanation.

If you have (in the destination view) a folder which is full (the whole view is full of files/folders so there is no "empty" space anywhere. Space is referring to visual space, not physical medium space) and would like to copy/move a selection via drag and drop to it, this is completely impossible with krusader. You have to resort to ctrl+c/ctrl+x and then using ctrl+v in the destination view. So what I mean is that if you drag and drop a selection in this (visually full) view, here is what I want to happen:
If you drag the selection to a subfolder, this subfolder will be visually marked (background color changes for example) when you hover over the NAME of the subfolder. And if you drop it there, it will go into the subfolder. If you however move the mouse out of the name of the folder (and into the size/rwx, perms etc columns) the folder should not be selected and the selection will be copied/moved into the destination view root, and not into any subfolder who's right column you might be over at the time.