There is a superfluous static \headheight setting (to
12pt) in jadetex.dtx left over from older versions,
causing wrong spacing and warnings of the following form:
Package Fancyhdr Warning: \headheight is too small
Make it at least 13.26343pt.
We now make it that large for the rest of the document.
This may cause the page layout to be inconsistent,
\headheight is now set correctly to \LineSpacing. The
static setting should be removed. This also makes the
output go away.
Peter Backes <email@example.com>