Application that crashed: kontact
Version of the application: 4.3.0
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.29.6-217.2.3.fc11.x86_64 x86_64
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
Kontact had just opened. I clicked to view my inbox and KMail crashed. I had just logged in and clicked "Start Kontact" when the duplicate Kontact dialog popped up (clicking exit gives me no Kontact at all)

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fd4ba9f9820 (LWP 2050))]

Thread 3 (Thread 0x7fd4a8e1f910 (LWP 2178)):
#0  0x00000036b8ad50b3 in poll () from /lib64/libc.so.6
#1  0x00000036bb60a041 in send_dg () from /lib64/libresolv.so.2
#2  0x00000036bb60bed4 in __libc_res_nsend () from /lib64/libresolv.so.2
#3  0x00000036bb608755 in __libc_res_nquery () from /lib64/libresolv.so.2
#4  0x00000036bb608d51 in __libc_res_nquerydomain () from /lib64/libresolv.so.2
#5  0x00000036bb60955b in __libc_res_nsearch () from /lib64/libresolv.so.2
#6  0x00007fd4a9797807 in _nss_dns_gethostbyname4_r () from /lib64/libnss_dns.so.2
#7  0x00000036b8ac6aa4 in gaih_inet () from /lib64/libc.so.6
#8  0x00000036b8ac888f in getaddrinfo () from /lib64/libc.so.6
#9  0x0000003b1ac8c312 in QHostInfoAgent::fromName (hostName=@0x7fd4a8e1ee90) at kernel/qhostinfo_unix.cpp:205
#10 0x0000003b1ac81ee2 in QHostInfo::fromName (name=<value optimized out>) at kernel/qhostinfo.cpp:230
#11 0x00000035c89b68ab in QtConcurrent::StoredFunctorCall1<QHostInfo, QHostInfo (*)(QString const&), QString>::runFunctor (this=0x1c45030) at /usr/include/QtCore/qtconcurrentstoredfunctioncall.h:274
#12 0x00000035c89b6fc7 in QtConcurrent::RunFunctionTask<QHostInfo>::run (this=0x1c45030) at /usr/include/QtCore/qtconcurrentrunbase.h:103
#13 0x0000003b1a250d54 in QThreadPoolThread::run (this=<value optimized out>) at concurrent/qthreadpool.cpp:106
#14 0x0000003b1a259cd5 in QThreadPrivate::start (arg=0x1b449a0) at thread/qthread_unix.cpp:188
#15 0x00000036b960686a in start_thread () from /lib64/libpthread.so.0
#16 0x00000036b8ade39d in clone () from /lib64/libc.so.6
#17 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fd4aa3ba910 (LWP 2179)):
#0  0x00000036b8ad50b3 in poll () from /lib64/libc.so.6
#1  0x00000036bb60a041 in send_dg () from /lib64/libresolv.so.2
#2  0x00000036bb60bed4 in __libc_res_nsend () from /lib64/libresolv.so.2
#3  0x00000036bb608755 in __libc_res_nquery () from /lib64/libresolv.so.2
#4  0x00000036bb608d51 in __libc_res_nquerydomain () from /lib64/libresolv.so.2
#5  0x00000036bb60955b in __libc_res_nsearch () from /lib64/libresolv.so.2
#6  0x00007fd4a9797807 in _nss_dns_gethostbyname4_r () from /lib64/libnss_dns.so.2
#7  0x00000036b8ac6aa4 in gaih_inet () from /lib64/libc.so.6
#8  0x00000036b8ac888f in getaddrinfo () from /lib64/libc.so.6
#9  0x0000003b1ac8c312 in QHostInfoAgent::fromName (hostName=@0x7fd4aa3b9e90) at kernel/qhostinfo_unix.cpp:205
#10 0x0000003b1ac81ee2 in QHostInfo::fromName (name=<value optimized out>) at kernel/qhostinfo.cpp:230
#11 0x00000035c89b68ab in QtConcurrent::StoredFunctorCall1<QHostInfo, QHostInfo (*)(QString const&), QString>::runFunctor (this=0x1c52310) at /usr/include/QtCore/qtconcurrentstoredfunctioncall.h:274
#12 0x00000035c89b6fc7 in QtConcurrent::RunFunctionTask<QHostInfo>::run (this=0x1c52310) at /usr/include/QtCore/qtconcurrentrunbase.h:103
#13 0x0000003b1a250d54 in QThreadPoolThread::run (this=<value optimized out>) at concurrent/qthreadpool.cpp:106
#14 0x0000003b1a259cd5 in QThreadPrivate::start (arg=0x1b1ace0) at thread/qthread_unix.cpp:188
#15 0x00000036b960686a in start_thread () from /lib64/libpthread.so.0
#16 0x00000036b8ade39d in clone () from /lib64/libc.so.6
#17 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fd4ba9f9820 (LWP 2050)):
[KCrash Handler]
#5  0x00007fd4adb01412 in KMailPart::exportFolder (this=0xe094d0, folder=0x156d470) at /usr/src/debug/kdepim-4.3.0/kmail/kmail_part.cpp:161
#6  0x00007fd4adb015c4 in KMailPart::qt_metacall (this=0xe094d0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffedc6fd10)
    at /usr/src/debug/kdepim-4.3.0/x86_64-redhat-linux-gnu/kmail/kmail_part.moc:90
#7  0x0000003b1a354fdc in QMetaObject::activate (sender=0x1bf2b00, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3113
#8  0x00007fd4ad2c152f in KMail::FolderViewManager::folderActivated (this=0x7fffedc6fbb0, _t1=0x156d470) at /usr/src/debug/kdepim-4.3.0/x86_64-redhat-linux-gnu/kmail/folderview.moc:82
#9  0x00007fd4ad2c30ed in KMail::FolderViewManager::viewFolderActivated (this=0x1bf2b00, view=0x1ddf2b0, fld=0x156d470, middleButton=false) at /usr/src/debug/kdepim-4.3.0/kmail/folderview.cpp:148
#10 0x00007fd4ad2cb447 in KMail::FolderView::activateItemInternal (this=0x1ddf2b0, fvi=0x1e42c70, keepSelection=false, notifyManager=true, middleButton=false)
    at /usr/src/debug/kdepim-4.3.0/kmail/folderview.cpp:1007
#11 0x00007fd4ad2cbdf8 in KMail::FolderView::qt_metacall (this=0x1ddf2b0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffedc6ff10)
    at /usr/src/debug/kdepim-4.3.0/x86_64-redhat-linux-gnu/kmail/folderview.moc:207
#12 0x00007fd4ad2cf9e0 in KMail::MainFolderView::qt_metacall (this=0x7fffedc6fbb0, _c=22467696, _id=31730800, _a=0x0)
    at /usr/src/debug/kdepim-4.3.0/x86_64-redhat-linux-gnu/kmail/mainfolderview.moc:64
#13 0x0000003b1a354fdc in QMetaObject::activate (sender=0x1ddf2b0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3113
#14 0x0000003b1bad1720 in QTreeWidget::itemClicked (this=0x7fffedc6fbb0, _t1=0x1e42c80, _t2=0) at .moc/release-shared/moc_qtreewidget.cpp:201
#15 0x0000003b1bade308 in QTreeWidget::qt_metacall (this=0x1ddf2b0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffedc70110) at .moc/release-shared/moc_qtreewidget.cpp:144
#16 0x00007fd4bbb80260 in KPIM::TreeWidget::qt_metacall (this=0x7fffedc6fbb0, _c=22467696, _id=31730800, _a=0x0) at /usr/src/debug/kdepim-4.3.0/x86_64-redhat-linux-gnu/libkdepim/moc_treewidget.cpp:68
#17 0x00007fd4bbbdb4a0 in KPIM::FolderTreeWidget::qt_metacall (this=0x7fffedc6fbb0, _c=22467696, _id=31730800, _a=0x0)
    at /usr/src/debug/kdepim-4.3.0/x86_64-redhat-linux-gnu/libkdepim/foldertreewidget.moc:68
#18 0x00007fd4ad2cbc20 in KMail::FolderView::qt_metacall (this=0x7fffedc6fbb0, _c=22467696, _id=31730800, _a=0x0) at /usr/src/debug/kdepim-4.3.0/x86_64-redhat-linux-gnu/kmail/folderview.moc:188
#19 0x00007fd4ad2cf9e0 in KMail::MainFolderView::qt_metacall (this=0x7fffedc6fbb0, _c=22467696, _id=31730800, _a=0x0)
    at /usr/src/debug/kdepim-4.3.0/x86_64-redhat-linux-gnu/kmail/mainfolderview.moc:64
#20 0x0000003b1a354fdc in QMetaObject::activate (sender=0x1ddf2b0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3113
#21 0x0000003b1ba59e75 in QAbstractItemView::clicked (this=0x7fffedc6fbb0, _t1=<value optimized out>) at .moc/release-shared/moc_qabstractitemview.cpp:321
#22 0x0000003b1ba66b0b in QAbstractItemView::mouseReleaseEvent (this=0x1ddf2b0, event=0x7fffedc70db0) at itemviews/qabstractitemview.cpp:1660
#23 0x0000003b1b5dd870 in QWidget::event (this=0x1ddf2b0, event=0x7fffedc70db0) at kernel/qwidget.cpp:7549
#24 0x0000003b1b9379e6 in QFrame::event (this=0x1ddf2b0, e=0x7fffedc70db0) at widgets/qframe.cpp:559
#25 0x0000003b1ba6a08b in QAbstractItemView::viewportEvent (this=0x1ddf2b0, event=0x7fffedc70db0) at itemviews/qabstractitemview.cpp:1476
#26 0x0000003b1baa0390 in QTreeView::viewportEvent (this=0x1ddf2b0, event=0x7fffedc70db0) at itemviews/qtreeview.cpp:1266
#27 0x0000003b1a33f007 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x1de12b0, event=0x7fffedc70db0) at kernel/qcoreapplication.cpp:726
#28 0x0000003b1b58edfc in QApplicationPrivate::notify_helper (this=0x9288e0, receiver=0x1de12b0, e=0x7fffedc70db0) at kernel/qapplication.cpp:4052
#29 0x0000003b1b596551 in QApplication::notify (this=<value optimized out>, receiver=0x1de12b0, e=0x7fffedc70db0) at kernel/qapplication.cpp:3758
#30 0x0000003b1cc10546 in KApplication::notify (this=0x7fffedc72cd0, receiver=0x1de12b0, event=0x7fffedc70db0) at /usr/src/debug/kdelibs-4.3.0/kdeui/kernel/kapplication.cpp:302
#31 0x0000003b1a33fcbc in QCoreApplication::notifyInternal (this=0x7fffedc72cd0, receiver=0x1de12b0, event=0x7fffedc70db0) at kernel/qcoreapplication.cpp:610
#32 0x0000003b1b595810 in QCoreApplication::sendSpontaneousEvent (event=<value optimized out>, receiver=<value optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:216
#33 QApplicationPrivate::sendMouseEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qapplication.cpp:2924
#34 0x0000003b1b5fb63e in QETWidget::translateMouseEvent (this=0xa14470, event=<value optimized out>) at kernel/qapplication_x11.cpp:4404
#35 0x0000003b1b5fa6da in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffedc728e0) at kernel/qapplication_x11.cpp:3545
#36 0x0000003b1b6223dc in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#37 0x00000036bae37abe in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#38 0x00000036bae3b278 in ?? () from /lib64/libglib-2.0.so.0
#39 0x00000036bae3b3a0 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#40 0x0000003b1a3683b6 in QEventDispatcherGlib::processEvents (this=0x8f0130, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#41 0x0000003b1b621b8e in QGuiEventDispatcherGlib::processEvents (this=0x7fffedc6fbb0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#42 0x0000003b1a33e5f2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 36}) at kernel/qeventloop.cpp:149
#43 0x0000003b1a33e9c4 in QEventLoop::exec (this=0x7fffedc72c10, flags={i = 0}) at kernel/qeventloop.cpp:201
#44 0x0000003b1a340b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#45 0x0000000000403d17 in main (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdepim-4.3.0/kontact/src/main.cpp:218

Reported using DrKonqi