I am having problems running the DocBook stylesheets with saxon. An 
OutOfMemoryError seems to occur as soon as a <table> element gets
included into the DocBook file.
Details :
I am using DocBook XML 4.2, docbook-xsl-1.61.3.zip and
saxon version 7.6.5. My commandline is
java net.sf.saxon.Transform test.db docbook/html/docbook.xsl > test.html
and test.db is as follows:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE article SYSTEM "dbdtd/docbookx.dtd">
<sect1 id="kadv">
<entry>A lt B</entry>
<entry>op:date-less-than(A, B)</entry>

The result is
Warning: at xsl:when on line 197 of file:/C:/local/saxon/docbook/common/table.xs
  Less-than and greater-than comparisons between strings have changed since XPat
h 1.0
Exception in thread "main" java.lang.OutOfMemoryError