diff --git a/0001-preserve-timestamps-for-.py-files.patch b/0001-preserve-timestamps-for-.py-files.patch
new file mode 100644
index 0000000..88aefa5
--- /dev/null
+++ b/0001-preserve-timestamps-for-.py-files.patch
@@ -0,0 +1,28 @@
+From 18af7e03d81d295a47457486d3036681bd17eb81 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
+Date: Mon, 13 Feb 2012 10:45:59 +0000
+Subject: [PATCH] preserve timestamps for .py files
+
+.pyc and .pyo binary caches contain the timestamp of the .py file, so for
+fedora multilib if the .py files get different times on different arch then the
+.py[o|c] files end up being different for the same content
+---
+ solenv/bin/install-gdb-printers |    2 +-
+ 1 files changed, 1 insertions(+), 1 deletions(-)
+
+diff --git a/solenv/bin/install-gdb-printers b/solenv/bin/install-gdb-printers
+index 99686cf..df327a0 100755
+--- a/solenv/bin/install-gdb-printers
++++ b/solenv/bin/install-gdb-printers
+@@ -165,7 +165,7 @@ fi
+ 
+ if [[ ${DESTDIR}${pythondir} != ${GDBDIR} ]]; then
+     mkdir -p "${DESTDIR}${pythondir}" || die "cannot create dir '${DESTDIR}${pythondir}'"
+-    cp -r "${GDBDIR}/libreoffice" "${DESTDIR}${pythondir}"
++    cp -pr "${GDBDIR}/libreoffice" "${DESTDIR}${pythondir}"
+ fi
+ 
+ make_autoload cppu ure-link/lib libuno_cppu."$DYLIB".3
+-- 
+1.7.7.6
+
diff --git a/libreoffice.spec b/libreoffice.spec
index 611f672..9dac6aa 100644
--- a/libreoffice.spec
+++ b/libreoffice.spec
@@ -34,7 +34,7 @@ Summary:        Free Software Productivity Suite
 Name:           libreoffice
 Epoch:          1
 Version:        3.5.0.3
-Release:        3%{?dist}
+Release:        4%{?dist}
 License:        (MPLv1.1 or LGPLv3+) and LGPLv3 and LGPLv2+ and BSD and (MPLv1.1 or GPLv2 or LGPLv2 or Netscape) and Public Domain and ASL 2.0 and Artistic
 Group:          Applications/Productivity
 URL:            http://www.documentfoundation.org/develop
@@ -124,6 +124,7 @@ Patch14: 0001-Resolves-rhbz-788042-skip-splashscreen-with-quicksta.patch
 Patch15: 0001-Resolves-fdo-43644-survive-registered-but-unavailabl.patch
 Patch16: 0001-make-hsqldb-build-with-java-1.7.patch
 Patch17: libreoffice-ensure-non-broken-xml-tree.patch
+Patch18: 0001-preserve-timestamps-for-.py-files.patch
 
 %{!?python_sitearch: %global python_sitearch %(%{__python} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib(1))")}
 %define instdir %{_libdir}
@@ -833,6 +834,7 @@ mv -f redhat.soc extras/source/palettes/standard.soc
 %patch15 -p1 -b .fdo43644-survive-registered-but-unavailabl.patch
 %patch16 -p1 -b .make-hsqldb-build-with-java-1.7.patch
 %patch17 -p1 -b .ensure-non-broken-xml-tree.patch
+%patch18 -p1 -b .preserve-timestamps-for-.py-files.patch
 
 # TODO: check this
 # these are horribly incomplete--empty translations and copied english
@@ -2130,6 +2132,10 @@ update-desktop-database %{_datadir}/applications &> /dev/null || :
 %endif
 
 %changelog
+* Mon Feb 13 2012 Caolán McNamara <caolanm@redhat.com> - 3.5.0.3-4
+- ensure gdb .py files have the same timstamps so that multilib
+  .pyc's and .pyo's have the same content (timestamp in binary cache)
+
 * Sat Feb 11 2012 Caolán McNamara <caolanm@redhat.com> - 3.5.0.3-3
 - make sure .tree files don't get busted again