Version:           3.3 (using KDE 3.3.89 (CVS >= 20041104), compiled sources)
Compiler:          gcc version 3.3.4 (Debian)
OS:                Linux (i686) release 2.4.21

In the tree view files can be selected by clicking on the whole row of the view, except the file itself since that will select AND execute the file.
So far so good.

Right clicking will show a popup menu that has either the scope of file or of directory based on the location in the row where you click. Best way to see this is in the 'open with' submenu, more entries appear when you have directory scope.  The 'open with -> browse with gwneview' for example.

The problem here is that the in the case of left click the entire row means you select the file, but with right click you have to click on the actual filename/icon to hit the file.

This creates the wierd effect that if you left-click just right of the file and you see it being selected, and then you right click on the same spot only to see it being unselected.  I have seen people mistakingly open k3b and do something on a whole dir where they intended to only use the one file.

The inconsistency here should at least be lessened by making the entire 'name' row select the file on right click.

As a sidenote; the most correct (since its the most consistent) behavior would be to make a right-click on the entire row select the file; but thats probably not usefull if you want to select the directory itself.  So unless usability testing proves otherwise, I'd the best solution would be the suggestion above.