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 2.6.31-14-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Kpackagekit goes off when running an update

 -- Backtrace:
Application: KPackageKit (kpackagekit), signal: Segmentation fault
[KCrash Handler]
#5  QWidget::window (this=0x1f45ec0) at kernel/qwidget.cpp:3883
#6  0x00007faa46d35683 in QApplicationPrivate::dispatchEnterLeave (enter=<value optimized out>, leave=0x1f45ec0) at kernel/qapplication.cpp:2527
#7  0x00007faa46d35b06 in QApplicationPrivate::sendMouseEvent (receiver=0x1de1dd0, event=0x7fff08cdd820, alienWidget=0x1de1dd0, nativeWidget=0x1d8a1b0, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>) at kernel/qapplication.cpp:2908
#8  0x00007faa46d9ba0e in QETWidget::translateMouseEvent (this=0x1d8a1b0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#9  0x00007faa46d9aaa9 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff08cdf350) at kernel/qapplication_x11.cpp:3550
#10 0x00007faa46dc3d0c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#11 0x00007faa42191bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#12 0x00007faa42195588 in ?? () from /lib/libglib-2.0.so.0
#13 0x00007faa421956b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#14 0x00007faa4643f1a6 in QEventDispatcherGlib::processEvents (this=0x1c37640, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#15 0x00007faa46dc34be in QGuiEventDispatcherGlib::processEvents (this=0x1f45ec0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#16 0x00007faa46415532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#17 0x00007faa46415904 in QEventLoop::exec (this=0x7fff08cdf680, flags=) at kernel/qeventloop.cpp:201
#18 0x00007faa46417ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#19 0x0000000000407c52 in _start ()

Reported using DrKonqi