kactivitymanager crashes on startup after few seconds. the problem happens every time.

Reproducible: Always

Steps to Reproduce:
1. Log in KDE.



Application: kactivitymanagerd (1.0)
KDE Platform Version: 4.8.3 (4.8.3)
Qt Version: 4.8.1
Operating System: Linux 3.3.7-1.fc16.x86_64 x86_64
Distribution: "Fedora release 16 (Verne)"

-- Information about the crash:
On startup, after few seconds (no more than 1 minute), the activity manager crashes. The bug happens every time.

The crash can be reproduced every time.

-- Backtrace:
Application: Gestore attività KDE (kactivitymanagerd), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[KCrash Handler]
#6  __memcpy_ssse3_back () at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1624
#7  0x0000003fede1587f in node_copy (src=0x3f29bd9528, to=<optimized out>, from=<optimized out>, this=0x241e850) at /usr/include/bits/string3.h:52
#8  detach_helper (alloc=<optimized out>, this=0x241e850) at /usr/include/QtCore/qlist.h:711
#9  QList<QIODevice*>::detach_helper (this=0x241e850) at /usr/include/QtCore/qlist.h:725
#10 0x0000003fede1555b in detachShared (this=0x241e850) at /usr/include/QtCore/qlist.h:145
#11 removeAll (_t=@0x249d208, this=0x241e850) at /usr/include/QtCore/qlist.h:772
#12 Soprano::Client::SocketHandler::~SocketHandler (this=0x249d1f0, __in_chrg=<optimized out>) at /usr/src/debug/soprano-2.7.4/client/clientconnection.cpp:59
#13 0x0000003fede15659 in Soprano::Client::SocketHandler::~SocketHandler (this=0x249d1f0, __in_chrg=<optimized out>) at /usr/src/debug/soprano-2.7.4/client/clientconnection.cpp:61
#14 0x0000003fe6879aad in QThreadStorageData::set (this=0x2419d20, p=0x24169b0) at thread/qthreadstorage.cpp:165
#15 0x0000003fede1301f in qThreadStorage_setLocalData<Soprano::Client::SocketHandler> (t=<synthetic pointer>, d=<optimized out>) at /usr/include/QtCore/qthreadstorage.h:92
#16 setLocalData (t=0x24169b0, this=<optimized out>) at /usr/include/QtCore/qthreadstorage.h:155
#17 Soprano::Client::ClientConnection::socketForCurrentThread (this=0x24a5740) at /usr/src/debug/soprano-2.7.4/client/clientconnection.cpp:95
#18 0x0000003fede13089 in Soprano::Client::ClientConnection::connectInCurrentThread (this=<optimized out>) at /usr/src/debug/soprano-2.7.4/client/clientconnection.cpp:800
#19 0x0000003fede1265a in Soprano::Client::LocalSocketClient::connect (this=0x24f2d38, name=...) at /usr/src/debug/soprano-2.7.4/client/localsocketclient.cpp:141
#20 0x0000003fef056531 in init (forced=true, this=0x24f2d10) at /usr/src/debug/kdelibs-4.8.3/nepomuk/core/nepomukmainmodel.cpp:102
#21 Nepomuk::MainModel::init (this=0x240a4b0) at /usr/src/debug/kdelibs-4.8.3/nepomuk/core/nepomukmainmodel.cpp:176
#22 0x0000003fef04e501 in Nepomuk::ResourceManager::init (this=0x22c4990) at /usr/src/debug/kdelibs-4.8.3/nepomuk/core/resourcemanager.cpp:326
#23 0x0000003fef051ce5 in Nepomuk::ResourceManagerPrivate::_k_storageServiceInitialized (this=0x24bb6c0, success=<optimized out>) at /usr/src/debug/kdelibs-4.8.3/nepomuk/core/resourcemanager.cpp:225
#24 0x0000003fef051e5b in Nepomuk::ResourceManager::qt_metacall (this=0x22c4990, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff3e3ee3e0) at /usr/src/debug/kdelibs-4.8.3/x86_64-redhat-linux-gnu/nepomuk/resourcemanager.moc:111
#25 0x0000003fe8622d2b in QDBusConnectionPrivate::deliverCall (this=0x22dc350, object=0x22c4990, msg=..., metaTypes=..., slotIdx=10) at qdbusintegrator.cpp:947
#26 0x0000003fe69927a6 in QObject::event (this=0x22c4990, e=<optimized out>) at kernel/qobject.cpp:1195
#27 0x0000003fe99c9bc4 in notify_helper (e=0x22c4a60, receiver=0x22c4990, this=0x22f38e0) at kernel/qapplication.cpp:4554
#28 QApplicationPrivate::notify_helper (this=0x22f38e0, receiver=0x22c4990, e=0x22c4a60) at kernel/qapplication.cpp:4526
#29 0x0000003fe99cea43 in QApplication::notify (this=0x7fff3e3eee10, receiver=0x22c4990, e=0x22c4a60) at kernel/qapplication.cpp:4415
#30 0x0000003fec051ff6 in KApplication::notify (this=0x7fff3e3eee10, receiver=0x22c4990, event=0x22c4a60) at /usr/src/debug/kdelibs-4.8.3/kdeui/kernel/kapplication.cpp:311
#31 0x0000003fe69798dc in QCoreApplication::notifyInternal (this=0x7fff3e3eee10, receiver=0x22c4990, event=0x22c4a60) at kernel/qcoreapplication.cpp:876
#32 0x0000003fe697d36a in sendEvent (event=0x22c4a60, receiver=0x22c4990) at kernel/qcoreapplication.h:231
#33 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x22b62e0) at kernel/qcoreapplication.cpp:1500
#34 0x0000003fe69a8193 in sendPostedEvents () at kernel/qcoreapplication.h:236
#35 postEventSourceDispatch (s=0x22f4a00) at kernel/qeventdispatcher_glib.cpp:279
#36 0x0000003fdd444f3d in g_main_dispatch (context=0x22e8aa0) at gmain.c:2441
#37 g_main_context_dispatch (context=0x22e8aa0) at gmain.c:3011
#38 0x0000003fdd445738 in g_main_context_iterate (context=0x22e8aa0, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3089
#39 0x0000003fdd44590c in g_main_context_iteration (context=0x22e8aa0, may_block=1) at gmain.c:3152
#40 0x0000003fe69a85bf in QEventDispatcherGlib::processEvents (this=0x22b77a0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#41 0x0000003fe9a6c8ce in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:207
#42 0x0000003fe6978a12 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#43 0x0000003fe6978c67 in QEventLoop::exec (this=0x7fff3e3eeda0, flags=...) at kernel/qeventloop.cpp:204
#44 0x0000003fe697d665 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#45 0x0000000000405e64 in main (argc=1, argv=0x7fff3e3ef008) at /usr/src/debug/kactivities-4.8.3/service/main.cpp:37