I've noted that unless you end a chapter (in komascript book documents) figures will be delayed to appear randomly. So if you want to force figures to appear you must end a chapter (if you end a section it wont work)
That's not true. Koma-script does _not_ change the placement of floats.
But LaTeX gives you several choices for the float placement. Simply right-click on a float inset and choose one or more possible positions.
regards Uwe
