diff --git a/qt-x11-opensource-src-4.5.3-javascript-disable-jit.patch b/qt-x11-opensource-src-4.5.3-javascript-disable-jit.patch
new file mode 100644
index 0000000..123908a
--- /dev/null
+++ b/qt-x11-opensource-src-4.5.3-javascript-disable-jit.patch
@@ -0,0 +1,24 @@
+diff -up qt-x11-opensource-src-4.5.3/src/3rdparty/webkit/JavaScriptCore/JavaScriptCore.pri.javascriptcore-disable-jit qt-x11-opensource-src-4.5.3/src/3rdparty/webkit/JavaScriptCore/JavaScriptCore.pri
+--- qt-x11-opensource-src-4.5.3/src/3rdparty/webkit/JavaScriptCore/JavaScriptCore.pri.javascriptcore-disable-jit	2009-09-29 13:01:35.000000000 +0200
++++ qt-x11-opensource-src-4.5.3/src/3rdparty/webkit/JavaScriptCore/JavaScriptCore.pri	2009-10-06 10:39:55.976466622 +0200
+@@ -13,20 +13,6 @@ win32-* {
+     LIBS += -lwinmm
+ }
+ 
+-# Disable the JIT due to numerous observed miscompilations :(
+-CONFIG(release):isEqual(QT_ARCH,i386) {
+-     JIT_DEFINES = ENABLE_JIT ENABLE_WREC ENABLE_JIT_OPTIMIZE_CALL ENABLE_JIT_OPTIMIZE_PROPERTY_ACCESS ENABLE_JIT_OPTIMIZE_ARITHMETIC
+-     # Require gcc >= 4.1
+-     linux-g++*:greaterThan(QT_GCC_MAJOR_VERSION,3):greaterThan(QT_GCC_MINOR_VERSION,0) {
+-         DEFINES += $$JIT_DEFINES WTF_USE_JIT_STUB_ARGUMENT_VA_LIST
+-         QMAKE_CXXFLAGS += -fno-stack-protector
+-         QMAKE_CFLAGS += -fno-stack-protector
+-     }
+-     win32-msvc* {
+-         DEFINES += $$JIT_DEFINES WTF_USE_JIT_STUB_ARGUMENT_REGISTER
+-     }
+-}
+-
+ win32-msvc*: INCLUDEPATH += $$PWD/os-win32
+ wince* {
+     INCLUDEPATH += $$PWD/os-wince
diff --git a/qt.spec b/qt.spec
index c6ac0d7..27557a5 100644
--- a/qt.spec
+++ b/qt.spec
@@ -10,7 +10,7 @@ Summary: Qt toolkit
 Name:    qt
 Epoch:   1
 Version: 4.5.3
-Release: 2%{?dist}
+Release: 3%{?dist}
 
 # See LGPL_EXCEPTIONS.txt, LICENSE.GPL3, respectively, for exception details
 License: LGPLv2 with exceptions or GPLv3 with exceptions
@@ -44,6 +44,9 @@ Patch21: qt-x11-opensource-src-4.5.2-gst-pulsaudio.patch
 # use system ca-bundle certs, http://bugzilla.redhat.com/521911
 Patch22: qt-x11-opensource-src-4.5.3-system_ca_certificates.patch 
 Requires: ca-certificates
+# disable JavaScriptCore JIT as it crashes with SE Linux
+# http://bugzilla.redhat.com/527079
+Patch23: qt-x11-opensource-src-4.5.3-javascript-disable-jit.patch
 
 ## upstreamable bits
 # http://bugzilla.redhat.com/485677
@@ -371,6 +374,7 @@ Qt libraries used for drawing widgets and OpenGL items.
 %patch19 -p1 -b .servicesfile
 %patch21 -p1 -b .gst-pulsaudio
 %patch22 -p1 -b .system_ca_certificates
+%patch23 -p1 -b .javascriptcore-disable-jit
 %patch51 -p1 -b .qdoc3
 %patch52 -p1 -b .sparc64
 %patch53 -p1 -b .qatomic-inline-asm
@@ -962,6 +966,9 @@ fi
 
 
 %changelog
+* Tue Oct 06 2009 Jaroslav Reznik <jreznik@redhat.com> - 4.5.3-3
+- disable JavaScriptCore JIT, SE Linux crashes (#527079)
+
 * Fri Oct 02 2009 Than Ngo <than@redhat.com> - 4.5.3-2
 - cleanup patches
 - if ! phonon_internal, exclude more/all phonon headers