I have searched high and low for a way to fix this problem, but haven't found anything or don't exactly know the search terms which will lead me to a solution. It has been driving me mad for months and I would love to get rid of this behaviour. I've tried changing lots of different configuration settings, but nothing seems to make it go away.
Basically, in KDE, have a window of Nautilus as an inactive window. Click on the very top title bar (the blue line bit) and it brings the window forward and makes it active. Perfect, great, just what I want to happen.
But put that window in the background again and click (just once and release) just below that on the menu bar (the grey extension of the file, edit, view, etc part) and the cursor turns into a hand and as I move the mouse, it makes the window active and it drags it window all around the screen. Aargh, I hate it. You miss that very top bit of the window and you are dragging the window around in circles. It happens a lot during the day switching between windows and I curse it every time it happens.
How do I turn that off? I never want a window to be dragable unless I am holding the mouse button down. A single click should never make a window dragable. It doesn't happen with every application. Nautilus seems to be the one I most consistently notice.