Version:            (using Devel)
Installed from:    Compiled sources
OS:                Linux

I'm using 4.1b1 on Kubuntu 8.04. When I'm in gmail (classic and the beta mail) and press the back button, konqueror crashes. 

Application: Konqueror (konqueror), signal SIGSEGV
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[Thread debugging using libthread_db enabled]
[New Thread 0xb60d5940 (LWP 5918)]
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[KCrash handler]
#6  0xb742ac8c in QString::operator== () from /usr/lib/libQtCore.so.4
#7  0xb434e3a4 in ?? () from /usr/lib/kde4/lib/libkhtml.so.5
#8  0xb43422bd in KHTMLPart::restoreState ()
   from /usr/lib/kde4/lib/libkhtml.so.5
#9  0xb435d22e in ?? () from /usr/lib/kde4/lib/libkhtml.so.5
#10 0xb43423df in KHTMLPart::restoreState ()
   from /usr/lib/kde4/lib/libkhtml.so.5
#11 0xb435d22e in ?? () from /usr/lib/kde4/lib/libkhtml.so.5
#12 0xb7ef6067 in KonqView::restoreHistory ()
   from /usr/lib/kde4/lib/libkdeinit4_konqueror.so
#13 0xb7ef639b in KonqView::go ()
   from /usr/lib/kde4/lib/libkdeinit4_konqueror.so
#14 0xb7f40bb0 in KonqMainWindow::slotGoHistoryDelayed ()
   from /usr/lib/kde4/lib/libkdeinit4_konqueror.so
#15 0xb7f483ab in KonqMainWindow::qt_metacall ()
   from /usr/lib/kde4/lib/libkdeinit4_konqueror.so
#16 0xb74ea4f9 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#17 0xb74eabc2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#18 0xb74f1037 in ?? () from /usr/lib/libQtCore.so.4
#19 0xb74f115c in ?? () from /usr/lib/libQtCore.so.4
#20 0xb74e5c9a in QObject::event () from /usr/lib/libQtCore.so.4
#21 0xb69c2c0c in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#22 0xb69c77a9 in QApplication::notify () from /usr/lib/libQtGui.so.4
#23 0xb7954603 in KApplication::notify () from /usr/lib/kde4/lib/libkdeui.so.5
#24 0xb74d56a9 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#25 0xb75031a1 in ?? () from /usr/lib/libQtCore.so.4
#26 0xb7500a40 in ?? () from /usr/lib/libQtCore.so.4
#27 0xb6445bf8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#28 0xb6448e5e in ?? () from /usr/lib/libglib-2.0.so.0
#29 0xb64493ac in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#30 0xb7500f98 in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#31 0xb6a561b5 in ?? () from /usr/lib/libQtGui.so.4
#32 0xb74d492d in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#33 0xb74d4abd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#34 0xb74d6d3d in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#35 0xb69c2567 in QApplication::exec () from /usr/lib/libQtGui.so.4
#36 0xb7f72ba5 in kdemain () from /usr/lib/kde4/lib/libkdeinit4_konqueror.so
#37 0x08048582 in _start ()
#0  0xb7f8d410 in __kernel_vsyscall ()