diff -Nru libdispatch-0~svn197/debian/changelog libdispatch-0~svn197/debian/changelog
--- libdispatch-0~svn197/debian/changelog	2011-07-02 11:52:35.000000000 +0900
+++ libdispatch-0~svn197/debian/changelog	2012-07-10 02:06:11.000000000 +0900
@@ -1,3 +1,10 @@
+libdispatch (0~svn197-3.1) unstable; urgency=low
+
+  * Non-maintainer upload.
+  * Fix use SSE2 instructions in i386. (Closes: #660806)
+
+ -- Nobuhiro Iwamatsu <iwamatsu@debian.org>  Tue, 10 Jul 2012 02:05:06 +0900
+
 libdispatch (0~svn197-3) unstable; urgency=low
 
   * Replace individual patches with a combined libdispatch-r197_v2 patch.
diff -Nru libdispatch-0~svn197/debian/patches/avoid-mfence-on-i386.patch libdispatch-0~svn197/debian/patches/avoid-mfence-on-i386.patch
--- libdispatch-0~svn197/debian/patches/avoid-mfence-on-i386.patch	1970-01-01 09:00:00.000000000 +0900
+++ libdispatch-0~svn197/debian/patches/avoid-mfence-on-i386.patch	2012-07-10 02:15:56.000000000 +0900
@@ -0,0 +1,20 @@
+Description: Fix use SSE2 instructions in i386. 
+libdispatch0 uses SSE2 instructions ("MFENCE") which are not available on a Pentium 3. This patch fix this problem.
+Bug-Debian: http://bugs.debian.org/660806
+Forwarded: None
+Author: Stefan Bühler <lighttpd@stbuehler.de>
+Last-Update: 2012-07-10
+
+Index: libdispatch-0~svn197/src/hw_shims.h
+===================================================================
+--- libdispatch-0~svn197.orig/src/hw_shims.h	2010-12-24 07:30:44.000000000 -0800
++++ libdispatch-0~svn197/src/hw_shims.h	2012-02-23 05:03:21.910448577 -0800
+@@ -48,7 +48,7 @@
+ #define dispatch_atomic_sub(p, v)	__sync_sub_and_fetch((p), (v))
+ #define dispatch_atomic_or(p, v)	__sync_fetch_and_or((p), (v))
+ #define dispatch_atomic_and(p, v)	__sync_fetch_and_and((p), (v))
+-#if defined(__i386__) || defined(__x86_64__)
++#if 0 && defined(__i386__) || defined(__x86_64__)
+ /* GCC emits nothing for __sync_synchronize() on i386/x86_64. */
+ #define dispatch_atomic_barrier()	__asm__ __volatile__("mfence")
+ #else
diff -Nru libdispatch-0~svn197/debian/patches/series libdispatch-0~svn197/debian/patches/series
--- libdispatch-0~svn197/debian/patches/series	2011-07-02 11:44:11.000000000 +0900
+++ libdispatch-0~svn197/debian/patches/series	2012-07-10 02:10:58.000000000 +0900
@@ -1,2 +1,3 @@
 libdispatch-r197_v2.patch
 disable_dispatch_read.patch
+avoid-mfence-on-i386.patch