Application that crashed: kpackagekit
Version of the application: 0.4.2
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-16-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
When trying to update packages, KPackageKit crashed

 -- Backtrace:
Application: KPackageKit (kpackagekit), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f94a8b82654 in QObject::parent (this=0x14445c0) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:243
#6  QWidget::parentWidget (this=0x14445c0) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:988
#7  QWidget::window (this=0x14445c0) at kernel/qwidget.cpp:3882
#8  0x00007f94a8b47683 in QApplicationPrivate::dispatchEnterLeave (enter=<value optimized out>, leave=0x14445c0) at kernel/qapplication.cpp:2527
#9  0x00007f94a8b47b06 in QApplicationPrivate::sendMouseEvent (receiver=0x12cfbd0, event=0x7fffb9aaa6e0, alienWidget=0x12cfbd0, nativeWidget=0x12769d0, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>) at kernel/qapplication.cpp:2908
#10 0x00007f94a8bada0e in QETWidget::translateMouseEvent (this=0x12769d0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#11 0x00007f94a8bacaa9 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffb9aac210) at kernel/qapplication_x11.cpp:3550
#12 0x00007f94a8bd5d0c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#13 0x00007f94a3fa3bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#14 0x00007f94a3fa7588 in ?? () from /lib/libglib-2.0.so.0
#15 0x00007f94a3fa76b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#16 0x00007f94a82511a6 in QEventDispatcherGlib::processEvents (this=0x10bc640, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#17 0x00007f94a8bd54be in QGuiEventDispatcherGlib::processEvents (this=0x14445c0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#18 0x00007f94a8227532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#19 0x00007f94a8227904 in QEventLoop::exec (this=0x7fffb9aac540, flags=) at kernel/qeventloop.cpp:201
#20 0x00007f94a8229ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#21 0x0000000000407c52 in _start ()

Reported using DrKonqi