Application: kontact (4.8.0)
KDE Platform Version: 4.8.1 (4.8.1)
Qt Version: 4.8.0
Operating System: Linux 3.0.0-16-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
Kontact crash immediately after start. This happens not every time.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f4f656197c0 (LWP 17954))]

Thread 5 (Thread 0x7f4f49915700 (LWP 17955)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f4f61e5cc2c in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f4f61e5cd59 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f4f5d629efc in start_thread (arg=0x7f4f49915700) at pthread_create.c:304
#4  0x00007f4f62b6c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f4f48ffc700 (LWP 17956)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007f4f48ffbb30 in ?? ()
#2  0x00007fff0475d7e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 3 (Thread 0x7f4ef80ba700 (LWP 17976)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216
#1  0x00007f4f631ad4ff in wait (time=30000, this=0x31a39b0) at thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x31a3958, time=30000) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f4f631a067f in QThreadPoolThread::run (this=0x31a4960) at concurrent/qthreadpool.cpp:141
#4  0x00007f4f631ad08b in QThreadPrivate::start (arg=0x31a4960) at thread/qthread_unix.cpp:298
#5  0x00007f4f5d629efc in start_thread (arg=0x7f4ef80ba700) at pthread_create.c:304
#6  0x00007f4f62b6c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f4ef59f9700 (LWP 17978)):
#0  0x00007f4f5d156f4b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4f5d157dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4f5d158429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4f632dac06 in QEventDispatcherGlib::processEvents (this=0x300e5a0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f4f632aa3e2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f4f632aa637 in QEventLoop::exec (this=0x7f4ef59f8d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f4f631aa067 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f4f6328a17f in QInotifyFileSystemWatcherEngine::run (this=0x31913c0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f4f631ad08b in QThreadPrivate::start (arg=0x31913c0) at thread/qthread_unix.cpp:298
#9  0x00007f4f5d629efc in start_thread (arg=0x7f4ef59f9700) at pthread_create.c:304
#10 0x00007f4f62b6c59d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f4f656197c0 (LWP 17954)):
[KCrash Handler]
#6  deref (this=0x2e0072006f00ca) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:133
#7  qAtomicAssign<QDBusMessagePrivate> (x=0x2b53c60, d=@0x2af7fb8) at ../../include/QtCore/../../src/corelib/thread/qatomic.h:200
#8  QDBusMessage::operator= (this=0x2af7fb8, other=...) at qdbusmessage.cpp:549
#9  0x00007f4f5fc9a664 in QDBusConnectionPrivate::processFinishedCall (call=0x2af7f70) at qdbusintegrator.cpp:1795
#10 0x00007f4f58f5445a in ?? () from /lib/x86_64-linux-gnu/libdbus-1.so.3
#11 0x00007f4f58f576ea in dbus_connection_dispatch () from /lib/x86_64-linux-gnu/libdbus-1.so.3
#12 0x00007f4f5fc986d9 in q_dbus_connection_dispatch (connection=<optimized out>) at qdbus_symbols_p.h:115
#13 QDBusConnectionPrivate::doDispatch (this=0x2169880) at qdbusintegrator.cpp:1129
#14 0x00007f4f5fc9c6a5 in QDBusConnectionPrivate::socketRead (this=0x2169880, fd=<optimized out>) at qdbusintegrator.cpp:1149
#15 0x00007f4f632bf9e1 in QMetaObject::activate (sender=0x23045d0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff046d9e70) at kernel/qobject.cpp:3547
#16 0x00007f4f6330c95e in QSocketNotifier::activated (this=<optimized out>, _t1=5) at .moc/release-shared/moc_qsocketnotifier.cpp:103
#17 0x00007f4f632c8d6b in QSocketNotifier::event (this=0x23045d0, e=0x7fff046da4e0) at kernel/qsocketnotifier.cpp:317
#18 0x00007f4f63c9f104 in notify_helper (e=0x7fff046da4e0, receiver=0x23045d0, this=0x21886f0) at kernel/qapplication.cpp:4555
#19 QApplicationPrivate::notify_helper (this=0x21886f0, receiver=0x23045d0, e=0x7fff046da4e0) at kernel/qapplication.cpp:4527
#20 0x00007f4f63ca3f83 in QApplication::notify (this=0x7fff046da790, receiver=0x23045d0, e=0x7fff046da4e0) at kernel/qapplication.cpp:4416
#21 0x00007f4f649d19a6 in KApplication::notify (this=0x7fff046da790, receiver=0x23045d0, event=0x7fff046da4e0) at ../../kdeui/kernel/kapplication.cpp:311
#22 0x00007f4f632ab5fc in QCoreApplication::notifyInternal (this=0x7fff046da790, receiver=0x23045d0, event=0x7fff046da4e0) at kernel/qcoreapplication.cpp:876
#23 0x00007f4f632da1f7 in sendEvent (event=0x7fff046da4e0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#24 socketNotifierSourceDispatch (source=0x218aad0) at kernel/qeventdispatcher_glib.cpp:110
#25 0x00007f4f5d157a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f4f5d158258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f4f5d158429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f4f632dab9f in QEventDispatcherGlib::processEvents (this=0x214ac10, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#29 0x00007f4f63d4421e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007f4f632aa3e2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007f4f632aa637 in QEventLoop::exec (this=0x7fff046da720, flags=...) at kernel/qeventloop.cpp:204
#32 0x00007f4f632af6c7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#33 0x0000000000403629 in ?? ()
#34 0x00007f4f62aaa30d in __libc_start_main (main=0x402b40, argc=1, ubp_av=0x7fff046dadb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff046dada8) at libc-start.c:226
#35 0x0000000000403b71 in _start ()

Reported using DrKonqi