Application: kontact (4.10)
KDE Platform Version: 4.10.00
Qt Version: 4.8.3
Operating System: Linux 3.8.0-rc7 x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
- What I was doing when the application crashed:

Kontact was opened already, but hidden in plasma tray bar. When I want activate it via global shortcut ("email" key on keyboard) it crashed. It happen sometimes, but not every time. It occurs sometimes when I want activate minimized Kontact window same way.

Kontact (4.10) is installed from Kubuntu bacports ppa.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Kontact (kontact), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f686f6927c0 (LWP 7459))]

Thread 3 (Thread 0x7f68531e2700 (LWP 7497)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f686bf13b2d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f686bf13c39 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f686704be9a in start_thread (arg=0x7f68531e2700) at pthread_create.c:308
#4  0x00007f686cc3ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f68528c9700 (LWP 7498)):
#0  0x00007f686cc33303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f6866784d84 in g_main_context_poll (n_fds=1, fds=0x7f684c0029c0, timeout=791, context=0x7f684c0009a0, priority=<optimized out>) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3584
#2  g_main_context_iterate (context=context@entry=0x7f684c0009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3285
#3  0x00007f6866784ea4 in g_main_context_iteration (context=0x7f684c0009a0, may_block=1) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3351
#4  0x00007f686e05fc16 in QEventDispatcherGlib::processEvents (this=0x7f684c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007f686e0302bf in QEventLoop::processEvents (this=this@entry=0x7f68528c8dc0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f686e030548 in QEventLoop::exec (this=0x7f68528c8dc0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f686df31b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8  0x00007f686df34aec in QThreadPrivate::start (arg=0x20d0b50) at thread/qthread_unix.cpp:338
#9  0x00007f686704be9a in start_thread (arg=0x7f68528c9700) at pthread_create.c:308
#10 0x00007f686cc3ecbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f686f6927c0 (LWP 7459)):
[KCrash Handler]
#6  0x00007f686cb81425 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#7  0x00007f686cb84b8b in __GI_abort () at abort.c:91
#8  0x00007f686df2a4c2 in qt_message_output (msgType=msgType@entry=QtFatalMsg, buf=0x663c2f8 "Fatal Error: Accessed global static 'KernelPrivate *sInstance()' after destruction. Defined at ../../mailcommon/mailkernel.cpp:55") at global/qglobal.cpp:2290
#9  0x00007f686df2a838 in qt_message(QtMsgType, const char *, typedef __va_list_tag __va_list_tag *) (msgType=msgType@entry=QtFatalMsg, msg=0x7f6809836a08 "Fatal Error: Accessed global static '%s *%s()' after destruction. Defined at %s:%d", ap=ap@entry=0x7fff01e61ef8) at global/qglobal.cpp:2336
#10 0x00007f686df2a9c4 in qFatal (msg=<optimized out>) at global/qglobal.cpp:2519
#11 0x00007f68097e7c57 in operator-> (this=<optimized out>) at ../../mailcommon/mailkernel.cpp:55
#12 MailCommon::Kernel::self () at ../../mailcommon/mailkernel.cpp:71
#13 0x00007f68097db7a9 in MailCommon::FolderCollection::writeConfig (this=this@entry=0x26c6e00) at ../../mailcommon/foldercollection.cpp:209
#14 0x00007f68097dc27a in MailCommon::FolderCollection::~FolderCollection (this=0x26c6e00, __in_chrg=<optimized out>) at ../../mailcommon/foldercollection.cpp:84
#15 0x00007f68097dc2f9 in MailCommon::FolderCollection::~FolderCollection (this=0x26c6e00, __in_chrg=<optimized out>) at ../../mailcommon/foldercollection.cpp:86
#16 0x00007f68097da014 in deref (value=0x26c6e00, d=0x26c6a50) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:342
#17 deref (this=<optimized out>) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:336
#18 ~ExternalRefCount (this=<optimized out>, __in_chrg=<optimized out>) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:401
#19 ~QSharedPointer (this=<optimized out>, __in_chrg=<optimized out>) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:466
#20 QMap<long long, QSharedPointer<MailCommon::FolderCollection> >::freeData (x=0x3b0a310, this=<optimized out>) at /usr/include/qt4/QtCore/qmap.h:652
#21 0x00007f686cb86901 in __run_exit_handlers (status=255, listp=0x7f686cf036a8 <__exit_funcs>, run_list_atexit=true) at exit.c:78
#22 0x00007f686cb86985 in __GI_exit (status=<optimized out>) at exit.c:100
#23 0x00007f686e4bd5e2 in KCmdLineArgs::isSet (this=0x5b7a8a0, _opt=...) at ../../kdecore/kernel/kcmdlineargs.cpp:1520
#24 0x0000000000403d17 in KontactApp::newInstance (this=0x7fff01e63510) at ../../../kontact/src/main.cpp:130
#25 0x00007f686ea758e2 in KUniqueApplicationAdaptor::newInstance (this=0x203f540, asn_id=..., args=...) at ../../kdeui/kernel/kuniqueapplication.cpp:442
#26 0x00007f686ea75964 in qt_static_metacall (_a=0x7fff01e62750, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at ./kuniqueapplication_p.moc:58
#27 KUniqueApplicationAdaptor::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=0x7fff01e62750) at ./kuniqueapplication_p.moc:52
#28 0x00007f686ea75a9b in KUniqueApplicationAdaptor::qt_metacall (this=0x203f540, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff01e62750) at ./kuniqueapplication_p.moc:102
#29 0x00007f6869d9eed3 in QDBusConnectionPrivate::deliverCall (this=this@entry=0x1e145a0, object=object@entry=0x203f540, msg=..., metaTypes=..., slotIdx=4) at qdbusintegrator.cpp:947
#30 0x00007f6869d9ffd5 in QDBusConnectionPrivate::activateCall (this=this@entry=0x1e145a0, object=0x203f540, flags=flags@entry=337, msg=...) at qdbusintegrator.cpp:857
#31 0x00007f6869da094f in QDBusConnectionPrivate::activateObject (this=0x1e145a0, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1423
#32 0x00007f6869da0a2b in QDBusActivateObjectEvent::placeMetaCall (this=0x95bf6d0) at qdbusintegrator.cpp:1537
#33 0x00007f686e04643e in QObject::event (this=0x7fff01e63510, e=<optimized out>) at kernel/qobject.cpp:1195
#34 0x00007f686d3daf94 in QApplication::event (this=0x7fff01e63510, e=0x95bf6d0) at kernel/qapplication.cpp:2544
#35 0x00007f686d3d8e9c in QApplicationPrivate::notify_helper (this=this@entry=0x1e2f6c0, receiver=receiver@entry=0x7fff01e63510, e=e@entry=0x95bf6d0) at kernel/qapplication.cpp:4562
#36 0x00007f686d3dd30a in QApplication::notify (this=0x7fff01e63510, receiver=0x7fff01e63510, e=0x95bf6d0) at kernel/qapplication.cpp:4423
#37 0x00007f686ea6f636 in KApplication::notify (this=0x7fff01e63510, receiver=0x7fff01e63510, event=0x95bf6d0) at ../../kdeui/kernel/kapplication.cpp:311
#38 0x00007f686e03156e in QCoreApplication::notifyInternal (this=0x7fff01e63510, receiver=receiver@entry=0x7fff01e63510, event=event@entry=0x95bf6d0) at kernel/qcoreapplication.cpp:915
#39 0x00007f686e0353f1 in sendEvent (event=0x95bf6d0, receiver=0x7fff01e63510) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#40 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1df26a0) at kernel/qcoreapplication.cpp:1539
#41 0x00007f686e05fa63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#42 postEventSourceDispatch (s=s@entry=0x1e30d00) at kernel/qeventdispatcher_glib.cpp:279
#43 0x00007f6866784ab5 in g_main_dispatch (context=0x1e2de00) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:2715
#44 g_main_context_dispatch (context=context@entry=0x1e2de00) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3219
#45 0x00007f6866784de8 in g_main_context_iterate (context=context@entry=0x1e2de00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3290
#46 0x00007f6866784ea4 in g_main_context_iteration (context=0x1e2de00, may_block=1) at /build/buildd/glib2.0-2.34.1/./glib/gmain.c:3351
#47 0x00007f686e05fbf6 in QEventDispatcherGlib::processEvents (this=0x1df3b60, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#48 0x00007f686d47dc1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#49 0x00007f686e0302bf in QEventLoop::processEvents (this=this@entry=0x7fff01e63380, flags=...) at kernel/qeventloop.cpp:149
#50 0x00007f686e030548 in QEventLoop::exec (this=0x7fff01e63380, flags=...) at kernel/qeventloop.cpp:204
#51 0x00007f686e035708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#52 0x0000000000403339 in main (argc=3, argv=0x7fff01e63658) at ../../../kontact/src/main.cpp:219

Reported using DrKonqi