DOCBOOK: Table of Examples

I have an appendix with this structure:

<appendix>
  <para>...</para>
  <refentry>
    <refsynopsisdiv>...</refsynopsisdiv>
    <refsect1>
      <refsect2>....</refsect2>
      <refsect2> 
	<example>...</example>
      </refsect2>
    </refsect1>
  <refentry>
  <refentry>
    <refsynopsisdiv>...</refsynopsisdiv>
    <refsect1>
      <refsect2>....</refsect2>
      <refsect2> 
	<example>...</example>
      </refsect2>
    </refsect1>
  <refentry>
</appendix>

In my HTML output, the examples appear as 

  List of Examples
  A-1. Something
  A-1. Something else

instead of

  List of Examples
  A-1. Something
  A-2. Something Else

Is this a bug in the 1.64 stylesheets, or am I doing something wrong?

-- Vladimir

---------
My DTD spec is "DOCTYPE book PUBLIC  '-//OASIS//DTD DocBook V3.1//EN'"
and I'm using 

  $ rm -qa | egrep "docbook|dsssl|jade"      
  docbook-dtd31-sgml-1.0-10
  openjade-1.3-13
  docbook-utils-0.6-13
  docbook-style-dsssl-1.64-2
  docbook-dtd30-sgml-1.0-10
  jadetex-3.3-1

on a Red Hat Linux 7.1 machine.