Application that crashed: kontact
Version of the application: 4.3.2
KDE Version: 4.3.1 (KDE 4.3.1) "release 6"
Qt Version: 4.5.3
Operating System: Linux 2.6.31.5-0.1-default x86_64
Distribution: "openSUSE 11.2 (x86_64)"

What I was doing when the application crashed:
Shut down Kontact.  Error message says that the resource is bing used by another application.  No other application was started that I am aware of.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fc880888750 (LWP 3175))]

Thread 2 (Thread 0x7fc85fa87910 (LWP 3233)):
#0  0x00007fc87a465049 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fc87f10153b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007fc878b489ec in ?? () from /usr/lib64/libQtNetwork.so.4
#3  0x00007fc87f100485 in ?? () from /usr/lib64/libQtCore.so.4
#4  0x00007fc87a46065d in start_thread () from /lib64/libpthread.so.0
#5  0x00007fc87df7b14d in clone () from /lib64/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc880888750 (LWP 3175)):
[KCrash Handler]
#5  0x00007fc87f1e5dc0 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#6  0x00007fc87e6fff5a in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#7  0x00007fc87e6b12ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#8  0x00007fc87e6b857e in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#9  0x00007fc87fb5e8d6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#10 0x00007fc87f1e5ddc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#11 0x00007fc87e6fff5a in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#12 0x00007fc87ea3eab6 in QFrame::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#13 0x00007fc87e6b12ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#14 0x00007fc87e6b857e in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#15 0x00007fc87fb5e8d6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#16 0x00007fc87f1e5ddc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#17 0x00007fc87e6fff5a in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#18 0x00007fc87e6b12ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#19 0x00007fc87e6b857e in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#20 0x00007fc87fb5e8d6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#21 0x00007fc87f1e5ddc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#22 0x00007fc87e6fff5a in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#23 0x00007fc87e6b12ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#24 0x00007fc87e6b857e in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#25 0x00007fc87fb5e8d6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#26 0x00007fc87f1e5ddc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#27 0x00007fc87e6fff5a in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#28 0x00007fc87ea590bb in QMainWindow::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#29 0x00007fc87fc69d83 in KXmlGuiWindow::event(QEvent*) () from /usr/lib64/libkdeui.so.5
#30 0x00007fc87e6b12ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#31 0x00007fc87e6b857e in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#32 0x00007fc87fb5e8d6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#33 0x00007fc87f1e5ddc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#34 0x00007fc87e6b6f09 in QApplicationPrivate::enterModal(QWidget*) () from /usr/lib64/libQtGui.so.4
#35 0x00007fc87e704e85 in QWidgetPrivate::show_helper() () from /usr/lib64/libQtGui.so.4
#36 0x00007fc87e705eba in QWidget::setVisible(bool) () from /usr/lib64/libQtGui.so.4
#37 0x00007fc87eb0f48c in QDialog::setVisible(bool) () from /usr/lib64/libQtGui.so.4
#38 0x00007fc87eb0e7a5 in QDialog::exec() () from /usr/lib64/libQtGui.so.4
#39 0x00007fc87fae4fc5 in KMessageBox::createKMessageBox(KDialog*, QIcon const&, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&, QMessageBox::Icon) () from /usr/lib64/libkdeui.so.5
#40 0x00007fc87fae6240 in KMessageBox::createKMessageBox(KDialog*, QMessageBox::Icon, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&) ()
   from /usr/lib64/libkdeui.so.5
#41 0x00007fc87fae7103 in KMessageBox::errorListWId(unsigned long, QString const&, QStringList const&, QString const&, QFlags<KMessageBox::Option>) () from /usr/lib64/libkdeui.so.5
#42 0x00007fc87fae7302 in KMessageBox::error(QWidget*, QString const&, QString const&, QFlags<KMessageBox::Option>) () from /usr/lib64/libkdeui.so.5
#43 0x00007fc87b9d10ee in KABC::GuiErrorHandler::error(QString const&) () from /usr/lib64/libkabc.so.4
#44 0x00007fc87b9b6799 in KABC::AddressBook::error(QString const&) () from /usr/lib64/libkabc.so.4
#45 0x00007fc863fc1535 in KABC::ResourceFile::requestSaveTicket() () from /usr/lib64/libkabc_file_core.so.4
#46 0x00007fc87b9b4c8e in KABC::AddressBook::requestSaveTicket(KABC::Resource*) () from /usr/lib64/libkabc.so.4
#47 0x00007fc87b9e02f2 in KABC::StdAddressBook::Private::saveAll() () from /usr/lib64/libkabc.so.4
#48 0x00007fc87b9e0517 in KABC::StdAddressBook::~StdAddressBook() () from /usr/lib64/libkabc.so.4
#49 0x00007fc87b9df746 in KABC::StdAddressBook::close() () from /usr/lib64/libkabc.so.4
#50 0x00007fc8650079a0 in KABCore::~KABCore() () from /usr/lib64/libkaddressbookprivate.so.4
#51 0x00007fc87f1f403c in QObjectPrivate::deleteChildren() () from /usr/lib64/libQtCore.so.4
#52 0x00007fc87e6fb823 in QWidget::~QWidget() () from /usr/lib64/libQtGui.so.4
#53 0x00007fc87dc850c4 in KParts::Part::~Part() () from /usr/lib64/libkparts.so.4
#54 0x00007fc8652c92eb in ?? () from /usr/lib64/kde4/kaddressbookpart.so
#55 0x00007fc88029fb5e in Kontact::Plugin::~Plugin() () from /usr/lib64/libkontactinterfaces.so.4
#56 0x00007fc86a794ca5 in ?? () from /usr/lib64/kde4/kontact_kaddressbookplugin.so
#57 0x00007fc8804c17ef in Kontact::MainWindow::~MainWindow() () from /usr/lib64/libkontactprivate.so.4
#58 0x00007fc87f1f52fd in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#59 0x00007fc87e6ff48f in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#60 0x00007fc87ea590bb in QMainWindow::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#61 0x00007fc87fc69d83 in KXmlGuiWindow::event(QEvent*) () from /usr/lib64/libkdeui.so.5
#62 0x00007fc87e6b12ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#63 0x00007fc87e6b857e in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#64 0x00007fc87fb5e8d6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#65 0x00007fc87f1e5ddc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#66 0x00007fc87f1e69ea in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQtCore.so.4
#67 0x00007fc87f20e803 in ?? () from /usr/lib64/libQtCore.so.4
#68 0x00007fc877de6dde in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#69 0x00007fc877dea7a8 in ?? () from /usr/lib64/libglib-2.0.so.0
#70 0x00007fc877dea8d0 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#71 0x00007fc87f20e3a3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#72 0x00007fc87e74431e in ?? () from /usr/lib64/libQtGui.so.4
#73 0x00007fc87f1e4712 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#74 0x00007fc87f1e4ae4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#75 0x00007fc87f1e6c99 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#76 0x0000000000403f67 in _start ()

Reported using DrKonqi