(I think those 3 files in KNOPPIX directory are for Windows only)
I have problems, but my situation is different; I remastered Knoppix 4.0.2 with Fluxbox as default WM, but there is posibility to use KDE within Fluxbox by simply running startkde script; when KDE is loading (there is no taskbar yet) Firefox is opening with the index.html page (Firefox is a default browser in KDE settings in ~/.kde); KDE initialization is stopped, but I can shut it down (by logging out), run it again and... KDE works, and there no web browser shows up
now why KDE doesn't work at first time? I think it's becouse of that Firefox, it starts and KDE "hangs" with splashscreen; I commented out all lines that tr suggested
it may be a simply mistake in 45session, I will check it out, too; but maybe you have know a way out
SOLVED: Firefox was in the Fluxbox's startup script and kdeinit, too

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