Chris, thank you for the patch, sorry I didn't acknowledge it earlier.  I think the core of the patch is good, though I will probably drop the text starting from "To safely use..." when I get time to apply it.  I will also add a note along the lines of "this applies also to Windows, although the details of the exploits differ".

I would like input from others as to whether this should indeed be a red warning box, or is adequate as a note.  We try to minimize the number of red boxes, but this may well be an appropriate case for one (I'm leaning that way myself).