Checking the following box should meet your needs:
"Settings | Panel | Selection Mode | Left mouse button selects"
Assuming that all the settings are in the same order in Krusader with
the language that you are using, I noticed that you only had the
following relevant setting checked "Double-click selects (classic)" I
have "Double-click selects (classic)" and "Left mouse button selects"
checked and I have the exact behavior that you desire.
I just noticed that you have "Shift/Ctrl-Left mouse button selects"
checked. When I check that box, and UNCHECK "Left mouse button selects"
I get the behavior that you describe in your message. The behavior that
you DON'T seem to want. I have t admit that if I wanted to set up
Konqueror to work the way that you seem to want it to work, I would
check the box that you checked "Shift/Ctrl-Left mouse button selects"
Again, if you have "Double-click selects (classic)" and "Left mouse
button selects" checked, I think you will have the selection behavior
that you desire.
Steven P. Ulrick