@idefix37
First of all I had not quite figured out how the menu systems work. I understand more now.
I had added the Webcams (-layer) by clicking the 'sliding button'. Now I had all the webcams icons all over the map.
I was clicking the webcam 'sliding button' again to deselect the webcams, expecting the webcam icons to dissapear, which they didn't.
I see now that clicking the buttons adds or removes from the layers bar, but doesn't immediately change what is allready shown on the map.
Hope that explained my misunderstanding.