Bug 296294

It may be a duplicate of bug 291801, but that bug lacks any stacktrace to confirm it. Kmail (running as part of Kontact) sometimes hangs when switching between folders or switching to a different Kontact component; in the stack trace below, the hang was caused by switching from KMail component to Akregator.

(gdb) bt
#0  0xb7774424 in __kernel_vsyscall ()
#1  0xb609b8a7 in syscall () at ../sysdeps/unix/sysv/linux/i386/syscall.S:30
#2  0xb62a6638 in _q_futex (val2=0, addr2=0x0, timeout=0x0, val=2, op=0, addr=0xae96a7b0) at thread/qmutex_unix.cpp:99
#3  QMutexPrivate::wait (this=0xae96a7b0, timeout=-1) at thread/qmutex_unix.cpp:113
#4  0xb62a2038 in QMutex::lock (this=0xae9629e0) at thread/qmutex.cpp:164
#5  0xb364a980 in lockInline (this=0xae9629e0) at /usr/include/qt4/QtCore/qmutex.h:188
#6  QMutexLocker (m=0xae9629e0, this=<synthetic pointer>) at /usr/include/qt4/QtCore/qmutex.h:109
#7  Nepomuk::ResourceData::constHasType (this=0xae9629b8, uri=...) at ../../nepomuk/core/resourcedata.cpp:248
#8  0xb365510e in Nepomuk::ResourceManagerPrivate::allResourceDataOfType (this=0x8586038, type=...) at ../../nepomuk/core/resourcemanager.cpp:129
#9  0xb365645d in Nepomuk::ResourceManager::allResourcesOfType (this=0x85872c8, type=...) at ../../nepomuk/core/resourcemanager.cpp:373
#10 0xb366a98a in Nepomuk::Tag::allTags () at ../../nepomuk/core/tag.cpp:130
#11 0xadbbc680 in KMail::TagActionManager::createActions() () from /usr/lib/libkmailprivate.so.4
#12 0xadc759c2 in ?? () from /usr/lib/kde4/kmailpart.so
#13 0xb5f82a84 in customEvent (ev=0xbfc2d66c, this=0x83f2c88) at ../../kparts/part.cpp:319
#14 KParts::Part::customEvent (this=0x83f2c88, ev=0xbfc2d66c) at ../../kparts/part.cpp:303
#15 0xb63d740c in QObject::event (this=0x83f2c88, e=0xbfc2d66c) at kernel/qobject.cpp:1226
#16 0xb6924d24 in notify_helper (e=0xbfc2d66c, receiver=0x83f2c88, this=0x8110320) at kernel/qapplication.cpp:4555
#17 QApplicationPrivate::notify_helper (this=0x8110320, receiver=0x83f2c88, e=0xbfc2d66c) at kernel/qapplication.cpp:4527
#18 0xb692a15d in QApplication::notify (this=0xbfc2d66c, receiver=0x83f2c88, e=0xbfc2d66c) at kernel/qapplication.cpp:4284
#19 0xb74a7801 in KApplication::notify (this=0xbfc2ece4, receiver=0x83f2c88, event=0xbfc2d66c) at ../../kdeui/kernel/kapplication.cpp:311
#20 0xb63bc0ae in QCoreApplication::notifyInternal (this=0xbfc2ece4, receiver=0x83f2c88, event=0xbfc2d66c) at kernel/qcoreapplication.cpp:876
#21 0xb5f8f3a0 in sendEvent (event=0xbfc2d66c, receiver=<optimized out>) at /usr/include/qt4/QtCore/qcoreapplication.h:231
#22 KParts::MainWindow::createGUI (this=0x82000e0, part=0x8ab6640) at ../../kparts/mainwindow.cpp:101
#23 0xb7741d93 in Kontact::MainWindow::selectPlugin(KontactInterface::Plugin*) () from /usr/lib/libkontactprivate.so.4
#24 0xb7741084 in ?? () from /usr/lib/libkontactprivate.so.4
#25 0xb63d2de1 in QMetaObject::activate (sender=0x81f2120, m=0xb77536e4, local_signal_index=0, argv=0xbfc2d8f8) at kernel/qobject.cpp:3547
#26 0xb7744bb5 in ?? () from /usr/lib/libkontactprivate.so.4
#27 0xb63d2de1 in QMetaObject::activate (sender=0x81ff830, m=0xb77539dc, local_signal_index=0, argv=0xbfc2d9d8) at kernel/qobject.cpp:3547
#28 0xb77458b5 in ?? () from /usr/lib/libkontactprivate.so.4
#29 0xb7745941 in ?? () from /usr/lib/libkontactprivate.so.4
#30 0xb63d2de1 in QMetaObject::activate (sender=0x810ffc0, m=0xb72a8868, local_signal_index=1, argv=0xbfc2daf4) at kernel/qobject.cpp:3547
#31 0xb6f346fd in QItemSelectionModel::currentChanged (this=0x810ffc0, _t1=..., _t2=...) at .moc/release-shared/moc_qitemselectionmodel.cpp:173
#32 0xb6f3487c in QItemSelectionModel::setCurrentIndex (this=0x810ffc0, index=..., command=...) at itemviews/qitemselectionmodel.cpp:1175
#33 0xb6edc40d in QAbstractItemView::mousePressEvent (this=0x81ff830, event=0xbfc2e494) at itemviews/qabstractitemview.cpp:1682
#34 0xb697f488 in QWidget::event (this=0x81ff830, event=0xbfc2e494) at kernel/qwidget.cpp:8357
#35 0xb6d9c135 in QFrame::event (this=0x81ff830, e=0xbfc2e494) at widgets/qframe.cpp:557
#36 0xb6e2ee21 in QAbstractScrollArea::viewportEvent (this=0x81ff830, e=0xbfc2e494) at widgets/qabstractscrollarea.cpp:1043
#37 0xb6ed4cdc in QAbstractItemView::viewportEvent (this=0x81ff830, event=0xbfc2e494) at itemviews/qabstractitemview.cpp:1644
#38 0xb6e31546 in viewportEvent (this=<optimized out>, event=0xbfc2e494) at widgets/qabstractscrollarea_p.h:100
#39 eventFilter (e=0xbfc2e494, this=<optimized out>, o=<optimized out>) at widgets/qabstractscrollarea_p.h:116
#40 QAbstractScrollAreaFilter::eventFilter (this=0x81ecd20, o=0x81eb6b0, e=0xbfc2e494) at widgets/qabstractscrollarea_p.h:115
#41 0xb63bc246 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8110320, receiver=0x81eb6b0, event=0xbfc2e494) at kernel/qcoreapplication.cpp:986
#42 0xb6924cf2 in notify_helper (e=0xbfc2e494, receiver=0x81eb6b0, this=0x8110320) at kernel/qapplication.cpp:4551
#43 QApplicationPrivate::notify_helper (this=0x8110320, receiver=0x81eb6b0, e=0xbfc2e494) at kernel/qapplication.cpp:4527
#44 0xb692ae74 in QApplication::notify (this=0x8110320, receiver=0x81eb6b0, e=0xbfc2e494) at kernel/qapplication.cpp:4098
#45 0xb74a7801 in KApplication::notify (this=0xbfc2ece4, receiver=0x81eb6b0, event=0xbfc2e494) at ../../kdeui/kernel/kapplication.cpp:311
#46 0xb63bc0ae in QCoreApplication::notifyInternal (this=0xbfc2ece4, receiver=0x81eb6b0, event=0xbfc2e494) at kernel/qcoreapplication.cpp:876
#47 0xb6925ce5 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#48 QApplicationPrivate::sendMouseEvent (receiver=0x81eb6b0, event=0xbfc2e494, alienWidget=0x81eb6b0, nativeWidget=0x81f2120, buttonDown=0xb72b7cf4, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:3166
#49 0xb69b1ec4 in QETWidget::translateMouseEvent (this=0x81f2120, event=0xbfc2e94c) at kernel/qapplication_x11.cpp:4614
#50 0xb69b0a5d in QApplication::x11ProcessEvent (this=0xbfc2ece4, event=0xbfc2e94c) at kernel/qapplication_x11.cpp:3732
#51 0xb69ddc0c in x11EventSourceDispatch (s=0x810efa8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#52 0xb38d4d8a in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#53 0xb38d5195 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#54 0xb38d5271 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#55 0xb63eefb7 in QEventDispatcherGlib::processEvents (this=0x80e3800, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#56 0xb69dd80a in QGuiEventDispatcherGlib::processEvents (this=0x80e3800, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#57 0xb63bac3d in QEventLoop::processEvents (this=0xbfc2ec44, flags=...) at kernel/qeventloop.cpp:149
#58 0xb63baed9 in QEventLoop::exec (this=0xbfc2ec44, flags=...) at kernel/qeventloop.cpp:204
#59 0xb63c05ea in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#60 0xb69228c4 in QApplication::exec () at kernel/qapplication.cpp:3816
---Type <return> to continue, or q <return> to quit---
#61 0x0804ac91 in ?? ()
#62 0xb5fcf4d3 in __libc_start_main (main=0x804a1b0, argc=1, ubp_av=0xbfc2ef04, init=0x804ba60 <__libc_csu_init>, fini=0x804bad0 <__libc_csu_fini>, rtld_fini=0xb7784280 <_dl_fini>, stack_end=0xbfc2eefc)
    at libc-start.c:226
#63 0x0804b1a1 in _start ()
(gdb) info threads
  Id   Target Id         Frame 
  7    Thread 0xafbf4b40 (LWP 1946) "kontact" 0xb7774424 in __kernel_vsyscall ()
  6    Thread 0xaf2d3b40 (LWP 1947) "kontact" 0xb7774424 in __kernel_vsyscall ()
  5    Thread 0xad1c0b40 (LWP 1949) "kontact" 0xb7774424 in __kernel_vsyscall ()
  4    Thread 0xab1dcb40 (LWP 2267) "kontact" 0xb7774424 in __kernel_vsyscall ()
  3    Thread 0xac637b40 (LWP 2448) "kontact" 0xb7774424 in __kernel_vsyscall ()
  2    Thread 0xa6c76b40 (LWP 2475) "kontact" 0xb7774424 in __kernel_vsyscall ()
* 1    Thread 0xb21be980 (LWP 1945) "kontact" 0xb7774424 in __kernel_vsyscall ()
(gdb) thread 2
[Switching to thread 2 (Thread 0xa6c76b40 (LWP 2475))]
#0  0xb7774424 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7774424 in __kernel_vsyscall ()
#1  0xb60ad3e1 in __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/lowlevellock.S:95
#2  0xb602e5fe in _L_lock_10398 () at malloc.c:5210
#3  0xb602c9d3 in __GI___libc_malloc (bytes=28) at malloc.c:2921
#4  0xb7782577 in _dl_map_object_deps (map=0xb41ca598, preloads=<optimized out>, npreloads=3053226903, trace_mode=0, open_mode=-2147483648) at dl-deps.c:517
#5  0xb7787dca in dl_open_worker (a=0xa6c75450) at dl-open.c:262
#6  0xb7783ccf in _dl_catch_error (objname=0xa6c75474, errstring=0xa6c75478, mallocedp=0xa6c7547f, operate=0xb7787c40 <dl_open_worker>, args=0xa6c75450) at dl-error.c:178
#7  0xb77877f4 in _dl_open (file=0xb6110ec5 "libgcc_s.so.1", mode=-2147483647, caller_dlopen=0xb60b4ad8, nsid=-2, argc=1, argv=0xbfc2ef04, env=0x81cb258) at dl-open.c:639
#8  0xb60d88d1 in do_dlopen (ptr=0xa6c75600) at dl-libc.c:89
#9  0xb7783ccf in _dl_catch_error (objname=0xa6c755d4, errstring=0xa6c755d8, mallocedp=0xa6c755df, operate=0xb60d8870 <do_dlopen>, args=0xa6c75600) at dl-error.c:178
#10 0xb60d89c7 in dlerror_run (operate=<optimized out>, args=<optimized out>) at dl-libc.c:48
#11 0xb60d8a57 in __GI___libc_dlopen_mode (name=0xb6110ec5 "libgcc_s.so.1", mode=-2147483647) at dl-libc.c:165
#12 0xb60b4ad8 in init () at ../sysdeps/i386/backtrace.c:44
#13 0xb39ace8e in pthread_once () at ../nptl/sysdeps/unix/sysv/linux/i386/pthread_once.S:122
#14 0xb60b4d45 in __GI___backtrace (array=0xa6c75c50, size=64) at ../sysdeps/i386/backtrace.c:121
#15 0xb601dfb0 in __libc_message (do_abort=2, fmt=0xb6115f3c "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:180
#16 0xb6028ae2 in malloc_printerr (action=<optimized out>, str=<optimized out>, ptr=0xae9603d0) at malloc.c:5007
#17 0xb602ad58 in _int_malloc (av=0xae900010, bytes=32) at malloc.c:3795
#18 0xb602c9dc in __GI___libc_malloc (bytes=32) at malloc.c:2924
#19 0xb6205627 in operator new(unsigned int) () from /usr/lib/i386-linux-gnu/libstdc++.so.6
#20 0xb62a1a42 in QMutex::QMutex (this=0xae935504, mode=QMutex::NonRecursive) at thread/qmutex.cpp:125
#21 0xb2d40080 in Soprano::Error::ErrorCache::ErrorCache() () from /usr/lib/libsoprano.so.4
#22 0xb2cb2792 in ?? () from /usr/lib/libsopranoclient.so.1
#23 0xb2cb8eb4 in ?? () from /usr/lib/libsopranoclient.so.1
#24 0xb2cbda3f in ?? () from /usr/lib/libsopranoclient.so.1
#25 0xb36525c8 in Soprano::Iterator<Soprano::BindingSet>::next (this=0xa6c76078) at /usr/include/Soprano/../soprano/iterator.h:239
#26 0xb364cb84 in Nepomuk::ResourceData::load (this=0xae9629b8) at ../../nepomuk/core/resourcedata.cpp:418
#27 0xb364d460 in Nepomuk::ResourceData::property (this=0xae9629b8, uri=...) at ../../nepomuk/core/resourcedata.cpp:265
#28 0xb3666661 in Nepomuk::Resource::property (this=0xa6c7623c, uri=...) at ../../nepomuk/core/resource.cpp:301
#29 0xad8f7a11 in ?? () from /usr/lib/libmessagecore.so.4
#30 0xb629a39b in QThreadPoolThread::run (this=0x9b9f238) at concurrent/qthreadpool.cpp:107
#31 0xb62a7de0 in QThreadPrivate::start (arg=0x9b9f238) at thread/qthread_unix.cpp:298
#32 0xb39a7d4c in start_thread (arg=0xa6c76b40) at pthread_create.c:308
#33 0xb609f76e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
(gdb) thread 3
[Switching to thread 3 (Thread 0xac637b40 (LWP 2448))]
#0  0xb7774424 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7774424 in __kernel_vsyscall ()
#1  0xb60ad3e1 in __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/lowlevellock.S:95
#2  0xb602e45d in _L_lock_3566 () at malloc.c:5210
#3  0xb60295f9 in _int_free (av=0xae900010, p=0xae925f78, have_lock=0) at malloc.c:4031
#4  0xb38ee3cd in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb38ee6db in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb38ee7ca in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb39a7b3e in __nptl_deallocate_tsd () at pthread_create.c:156
#8  0xb39a7d5a in start_thread (arg=0xac637b40) at pthread_create.c:315
#9  0xb609f76e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
(gdb) thread 4
[Switching to thread 4 (Thread 0xab1dcb40 (LWP 2267))]
#0  0xb7774424 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7774424 in __kernel_vsyscall ()
#1  0xb6091020 in __GI___poll (fds=0x86e7458, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#2  0xb38e2b7b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb38d511e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb38d5271 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb63eefb7 in QEventDispatcherGlib::processEvents (this=0x867c8d8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0xb63bac3d in QEventLoop::processEvents (this=0xab1dc240, flags=...) at kernel/qeventloop.cpp:149
#7  0xb63baed9 in QEventLoop::exec (this=0xab1dc240, flags=...) at kernel/qeventloop.cpp:204
#8  0xb62a494c in QThread::exec (this=0x894fe50) at thread/qthread.cpp:501
#9  0xb63982dd in QInotifyFileSystemWatcherEngine::run (this=0x894fe50) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb62a7de0 in QThreadPrivate::start (arg=0x894fe50) at thread/qthread_unix.cpp:298
#11 0xb39a7d4c in start_thread (arg=0xab1dcb40) at pthread_create.c:308
#12 0xb609f76e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
(gdb) thread 5
[Switching to thread 5 (Thread 0xad1c0b40 (LWP 1949))]
#0  0xb7774424 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7774424 in __kernel_vsyscall ()
#1  0xb6098791 in select () at ../sysdeps/unix/syscall-template.S:82
#2  0xb63965a6 in QProcessManager::run (this=0xb651be38) at io/qprocess_unix.cpp:244
#3  0xb62a7de0 in QThreadPrivate::start (arg=0xb651be38) at thread/qthread_unix.cpp:298
#4  0xb39a7d4c in start_thread (arg=0xad1c0b40) at pthread_create.c:308
#5  0xb609f76e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
(gdb) thread 6
[Switching to thread 6 (Thread 0xaf2d3b40 (LWP 1947))]
#0  0xb7774424 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7774424 in __kernel_vsyscall ()
#1  0xb60ad3e1 in __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/lowlevellock.S:95
#2  0xb602e5fe in _L_lock_10398 () at malloc.c:5210
#3  0xb602c9d3 in __GI___libc_malloc (bytes=32) at malloc.c:2921
#4  0xb62a013b in qMalloc (size=32) at global/qmalloc.cpp:55
#5  0xb62c81a0 in QListData::detach_grow (this=0xaf2d2ac4, idx=0xaf2d2a14, num=1) at tools/qlist.cpp:85
#6  0xb41e12ef in QList<QVariant>::detach_helper_grow (this=0xaf2d2ac4, i=2147483647, c=1) at ../../include/QtCore/../../src/corelib/tools/qlist.h:679
#7  0xb41e15e3 in QList<QVariant>::append (this=0xaf2d2ac4, t=...) at ../../include/QtCore/../../src/corelib/tools/qlist.h:510
#8  0xb41ea723 in QDBusConnectionPrivate::deliverCall (this=0x81f7a48, object=0xae909158, msg=..., metaTypes=..., slotIdx=-512) at qdbusintegrator.cpp:895
#9  0xb41f4c8d in QDBusCallDeliveryEvent::placeMetaCall (this=0x9f93e28, object=0xae909158) at qdbusintegrator_p.h:103
#10 0xb63d73ab in QObject::event (this=0xae909158, e=0x9f93e28) at kernel/qobject.cpp:1195
#11 0xb6924d24 in notify_helper (e=0x9f93e28, receiver=0xae909158, this=0x8110320) at kernel/qapplication.cpp:4555
#12 QApplicationPrivate::notify_helper (this=0x8110320, receiver=0xae909158, e=0x9f93e28) at kernel/qapplication.cpp:4527
#13 0xb692a15d in QApplication::notify (this=0x9f93e28, receiver=0xae909158, e=0x9f93e28) at kernel/qapplication.cpp:4284
#14 0xb74a7801 in KApplication::notify (this=0xbfc2ece4, receiver=0xae909158, event=0x9f93e28) at ../../kdeui/kernel/kapplication.cpp:311
#15 0xb63bc0ae in QCoreApplication::notifyInternal (this=0xbfc2ece4, receiver=0xae909158, event=0x9f93e28) at kernel/qcoreapplication.cpp:876
#16 0xb63c0208 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#17 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x81f1dc0) at kernel/qcoreapplication.cpp:1500
#18 0xb63c053c in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1393
#19 0xb63eebc4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#20 postEventSourceDispatch (s=0xae900da8) at kernel/qeventdispatcher_glib.cpp:279
#21 0xb38d4d8a in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#22 0xb38d5195 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#23 0xb38d5271 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#24 0xb63eefb7 in QEventDispatcherGlib::processEvents (this=0xae900468, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#25 0xb63bac3d in QEventLoop::processEvents (this=0xaf2d3270, flags=...) at kernel/qeventloop.cpp:149
#26 0xb63baed9 in QEventLoop::exec (this=0xaf2d3270, flags=...) at kernel/qeventloop.cpp:204
#27 0xb62a494c in QThread::exec (this=0x81f6028) at thread/qthread.cpp:501
#28 0xb62a4a3b in QThread::run (this=0x81f6028) at thread/qthread.cpp:568
#29 0xb62a7de0 in QThreadPrivate::start (arg=0x81f6028) at thread/qthread_unix.cpp:298
#30 0xb39a7d4c in start_thread (arg=0xaf2d3b40) at pthread_create.c:308
#31 0xb609f76e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
(gdb) thread 7
[Switching to thread 7 (Thread 0xafbf4b40 (LWP 1946))]
#0  0xb7774424 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7774424 in __kernel_vsyscall ()
#1  0xb39ab96b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0xb60ad07c in __pthread_cond_wait (cond=0xb5f5ea30, mutex=0xb5f5ea18) at forward.c:139
#3  0xb582d263 in ?? () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb582d37f in ?? () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb39a7d4c in start_thread (arg=0xafbf4b40) at pthread_create.c:308
#6  0xb609f76e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130