--- a/tests/benchmarks/gui/kernel/qwidget/tst_qwidget.cpp	Wed Jun 23 19:07:03 2010 +0300
+++ b/tests/benchmarks/gui/kernel/qwidget/tst_qwidget.cpp	Tue Jul 06 15:10:48 2010 +0300
@@ -159,12 +159,17 @@
     QTest::newRow("10x10x1 opaque")        << 10 << 10 << 1   << true;
     QTest::newRow("10x10x10 opaque")       << 10 << 10 << 10  << true;
     QTest::newRow("10x10x100 opaque")      << 10 << 10 << 100 << true;
+#ifndef Q_OS_SYMBIAN
+    //These test cases cause stack overflow in QWidgetPrivate::paintSiblingsRecursive
+    //see http://bugreports.qt.nokia.com/browse/QTBUG-8512
+    //Symbian threads have a hard limit of 80kB user stack
     QTest::newRow("25x25x1 transparent ")  << 25 << 25 << 1   << false;
     QTest::newRow("25x25x10 transparent")  << 25 << 25 << 10  << false;
     QTest::newRow("25x25x100 transparent") << 25 << 25 << 100 << false;
     QTest::newRow("25x25x1 opaque")        << 25 << 25 << 1   << true;
     QTest::newRow("25x25x10 opaque")       << 25 << 25 << 10  << true;
     QTest::newRow("25x25x100 opaque")      << 25 << 25 << 100 << true;
+#endif
 }
 
 void tst_QWidget::update()