diff --git a/debian/changelog b/debian/changelog
index b320316..e7b612b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,12 @@
+nut (2.6.4-2.3) unstable; urgency=low
+
+  * Non-maintainer upload with fixes for wheezy.
+  * debian/nut-client.preinst: also revert /etc/nut/nut.conf mangling done
+    by postinst during upgrade from lenny to squeeze (Really closes: #677054)
+    Thanks to Andreas Beckmann for the review.
+
+ -- Ivo De Decker <ivo.dedecker@ugent.be>  Sat, 26 Jan 2013 20:09:48 +0100
+
 nut (2.6.4-2.2) unstable; urgency=low
 
   * Non-maintainer upload with fixes for wheezy.
diff --git a/debian/nut-client.preinst b/debian/nut-client.preinst
index 2107da1..53134e3 100644
--- a/debian/nut-client.preinst
+++ b/debian/nut-client.preinst
@@ -4,6 +4,15 @@ set -e
 
 # Revert /etc/nut/nut.conf mangling done by older versions of the postinst
 # See #677054
+# changed configfile created by a fresh install in lenny, upgraded to squeeze
+if [ "$1" = "install" -o "$1" = "upgrade" ] \
+    && dpkg --compare-versions "$2" lt "2.6.4-2" \
+    && [ -f /etc/nut/nut.conf ] \
+    && [ "`md5sum /etc/nut/nut.conf | cut -d ' ' -f 1`" = 331cca39153f451c2968f4b734c1cf3f ]; then
+	sed -i '29,$ d' /etc/nut/nut.conf
+fi
+
+# changed configfile created by a fresh install in squeeze
 if [ "$1" = "install" -o "$1" = "upgrade" ] \
     && dpkg --compare-versions "$2" lt "2.6.4-2" \
     && [ -f /etc/nut/nut.conf ] \