diff --git a/kdelibs-4.6.0-fix-plasma-logout-crash-kde264076.patch b/kdelibs-4.6.0-fix-plasma-logout-crash-kde264076.patch
new file mode 100644
index 0000000..5fd8d0a
--- /dev/null
+++ b/kdelibs-4.6.0-fix-plasma-logout-crash-kde264076.patch
@@ -0,0 +1,22 @@
+commit 709f75ac353cd735ccac31f87363ea90dde345d3
+Author: Marco Martin <notmart@gmail.com>
+Date:   Tue Feb 1 21:15:49 2011 +0100
+
+    don't collapse when it's destroying
+    try to not crash upon deletion of the extender
+
+diff --git a/plasma/extenders/extenderitem.cpp b/plasma/extenders/extenderitem.cpp
+index bdbc886..3e5809f 100644
+--- a/plasma/extenders/extenderitem.cpp
++++ b/plasma/extenders/extenderitem.cpp
+@@ -596,6 +596,10 @@ void ExtenderItem::destroy()
+ 
+ void ExtenderItem::setCollapsed(bool collapsed)
+ {
++    if (extender()->d->destroying) {
++        return;
++    }
++
+     config().writeEntry("isCollapsed", collapsed);
+     d->collapsed = collapsed;
+     d->collapseIcon->setToolTip(collapsed ? i18n("Expand this widget") : i18n("Collapse this widget"));
diff --git a/kdelibs.spec b/kdelibs.spec
index 53403d4..1041348 100644
--- a/kdelibs.spec
+++ b/kdelibs.spec
@@ -16,7 +16,7 @@
 
 Summary: KDE Libraries
 Version: 4.6.0
-Release: 3%{?dist}
+Release: 4%{?dist}
 
 Name: kdelibs
 Epoch: 6
@@ -91,6 +91,8 @@ Patch27: kdelibs-4.5.80-no_rpath.patch
 Patch50: kdelibs-4.5.1-knewstuff_gpg2.patch
 
 ## trunk (4.6) upstream
+# fix kde#264076 - Plasma 4.6 crash on logout
+Patch100: kdelibs-4.6.0-fix-plasma-logout-crash-kde264076.patch
 
 ## security fix
 # Not Upstreamed? why not ? -- Rex
@@ -274,6 +276,7 @@ sed -i -e "s|@@VERSION_RELEASE@@|%{version}-%{release}|" kio/kio/kprotocolmanage
 %patch50 -p1 -b .knewstuff_gpg2
 
 # upstream patches
+%patch100 -p1 -b .fix-plasma-logout-crash-kde264076
 
 # security fix
 %patch200 -p1 -b .CVE-2009-2702
@@ -529,6 +532,9 @@ rm -rf %{buildroot}
 
 
 %changelog
+* Mon Feb 21 2011 Jaroslav Reznik <jreznik@redhat.com> - 4.6.0-4
+- Fix plasma logout crash (kde#264076)
+
 * Mon Feb 07 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 6:4.6.0-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild