Application that crashed: kontact
Version of the application: 4.3.2
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:
I had just sent an e-mail message and I wanted to archive it.
KDE Kontact crashed when I was moving the message from the Sent folder to the folder called Archives that I had previously created.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  0x00007f43bcd70bc1 in KMail::MessageListView::Widget::viewStartDragRequest (this=<value optimized out>) at ../../kmail/messagelistview/widget.cpp:776
#6  0x00007f43bcdbb26d in KMail::MessageListView::Core::View::mouseMoveEvent (this=0x1d951d0, e=<value optimized out>) at ../../kmail/messagelistview/core/view.cpp:2074
#7  0x00007f43d8cc8822 in QWidget::event (this=0x1d951d0, event=0x7ffff3e75920) at kernel/qwidget.cpp:7534
#8  0x00007f43d90242a6 in QFrame::event (this=0x1d951d0, e=0x7ffff3e75920) at widgets/qframe.cpp:559
#9  0x00007f43d915721b in QAbstractItemView::viewportEvent (this=0x1d951d0, event=0x7ffff3e75920) at itemviews/qabstractitemview.cpp:1476
#10 0x00007f43d918e420 in QTreeView::viewportEvent (this=0x1d951d0, event=0x7ffff3e75920) at itemviews/qtreeview.cpp:1266
#11 0x00007f43d8358f47 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x1d8e800, event=0x7ffff3e75920) at kernel/qcoreapplication.cpp:726
#12 0x00007f43d8c79ecc in QApplicationPrivate::notify_helper (this=0x14c8180, receiver=0x1d8e800, e=0x7ffff3e75920) at kernel/qapplication.cpp:4052
#13 0x00007f43d8c81011 in QApplication::notify (this=<value optimized out>, receiver=0x1d8e800, e=0x7ffff3e75920) at kernel/qapplication.cpp:3758
#14 0x00007f43d98b0ab6 in KApplication::notify (this=0x7ffff3e77840, receiver=0x1d8e800, event=0x7ffff3e75920) at ../../kdeui/kernel/kapplication.cpp:302
#15 0x00007f43d8359c2c in QCoreApplication::notifyInternal (this=0x7ffff3e77840, receiver=0x1d8e800, event=0x7ffff3e75920) at kernel/qcoreapplication.cpp:610
#16 0x00007f43d8c808e0 in QCoreApplication::sendSpontaneousEvent (receiver=0x1d8e800, event=0x7ffff3e75920, alienWidget=0x1d8e800, nativeWidget=0x14c6e10, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#17 QApplicationPrivate::sendMouseEvent (receiver=0x1d8e800, event=0x7ffff3e75920, alienWidget=0x1d8e800, nativeWidget=0x14c6e10, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>) at kernel/qapplication.cpp:2924
#18 0x00007f43d8ce6a0e in QETWidget::translateMouseEvent (this=0x14c6e10, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#19 0x00007f43d8ce5aa9 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7ffff3e77450) at kernel/qapplication_x11.cpp:3550
#20 0x00007f43d8d0ed0c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#21 0x00007f43d1bd3bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#22 0x00007f43d1bd7588 in ?? () from /lib/libglib-2.0.so.0
#23 0x00007f43d1bd76b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#24 0x00007f43d83821a6 in QEventDispatcherGlib::processEvents (this=0x1494cb0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#25 0x00007f43d8d0e4be in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#26 0x00007f43d8358532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#27 0x00007f43d8358904 in QEventLoop::exec (this=0x7ffff3e77780, flags=) at kernel/qeventloop.cpp:201
#28 0x00007f43d835aab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#29 0x0000000000403f47 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../kontact/src/main.cpp:218

Reported using DrKonqi