--- a/src/gui/effects/qgraphicseffect.cpp	Mon Jun 21 22:38:13 2010 +0100
+++ b/src/gui/effects/qgraphicseffect.cpp	Thu Jul 22 16:41:55 2010 +0100
@@ -326,7 +326,7 @@
     }
 
     QPixmap pm;
-    if (d->m_cachedSystem == system && d->m_cachedMode == mode)
+    if (item && d->m_cachedSystem == system && d->m_cachedMode == mode)
         QPixmapCache::find(d->m_cacheKey, &pm);
 
     if (pm.isNull()) {