--- mailman/Mailman/Archiver/HyperArch.py.orig	2005-10-23 07:04:15.000000000 -0400
+++ mailman/Mailman/Archiver/HyperArch.py	2005-10-23 07:05:45.000000000 -0400
@@ -432,7 +432,7 @@ class Article(pipermail.Article):
             d["title"] = self.quote(self.subject)
             d["subject_html"] = self.quote(self.subject)
             d["subject_url"] = url_quote(self.subject)
-            d["in_reply_to_url"] = url_quote(self.in_reply_to)
+            d["in_reply_to_url"] = url_quote(self._message_id)
             if mm_cfg.ARCHIVER_OBSCURES_EMAILADDRS:
                 # Point the mailto url back to the list
                 author = re.sub('@', _(' at '), self.author)
--- mailman/templates/en/article.html.orig	2005-10-23 07:21:04.000000000 -0400
+++ mailman/templates/en/article.html	2005-10-23 07:27:08.000000000 -0400
@@ -4,7 +4,7 @@
    <TITLE> %(title)s
    </TITLE>
    <LINK REL="Index" HREF="index.html" >
-   <LINK REL="made" HREF="mailto:%(email_url)s?Subject=%(subject_url)s&In-Reply-To=%(in_reply_to_url)s">
+   <LINK REL="made" HREF="mailto:%(email_url)s?Subject=Re:%%20%(subject_url)s&In-Reply-To=%(in_reply_to_url)s">
    <META NAME="robots" CONTENT="index,nofollow">
    %(encoding)s
    %(prev)s
@@ -13,7 +13,7 @@
  <BODY BGCOLOR="#ffffff">
    <H1>%(subject_html)s</H1>
     <B>%(author_html)s</B> 
-    <A HREF="mailto:%(email_url)s?Subject=%(subject_url)s&In-Reply-To=%(in_reply_to_url)s"
+    <A HREF="mailto:%(email_url)s?Subject=Re:%%20%(subject_url)s&In-Reply-To=%(in_reply_to_url)s"
        TITLE="%(subject_html)s">%(email_html)s
        </A><BR>
     <I>%(datestr_html)s</I>
