Application: plasma-desktop (0.4)
KDE Platform Version: 4.9.4
Qt Version: 4.8.3
Operating System: Linux 3.5.0-22-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
Try to add widget plasma kde the screen goes black and shuts the wizard crash

The crash can be reproduced every time.

-- Backtrace:
Application: Shell de escritorio Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9134019780 (LWP 2250))]

Thread 4 (Thread 0x7f91232da700 (LWP 2252)):
#0  0x00007f913b74605d in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x7f911c000a60) at pthread_mutex_unlock.c:290
#2  0x00007f913b080e51 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f913b043c5c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f913b043ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9144052c16 in QEventDispatcherGlib::processEvents (this=0x7f911c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f91440232bf in QEventLoop::processEvents (this=this@entry=0x7f91232d9dd0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f9144023548 in QEventLoop::exec (this=0x7f91232d9dd0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f9143f24b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#9  0x00007f91440039af in QInotifyFileSystemWatcherEngine::run (this=0x1c89b30) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f9143f27aec in QThreadPrivate::start (arg=0x1c89b30) at thread/qthread_unix.cpp:338
#11 0x00007f913b742e9a in start_thread (arg=0x7f91232da700) at pthread_create.c:308
#12 0x00007f91473afcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f9120a2b700 (LWP 2257)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f91410a9cd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f91410a9d09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f913b742e9a in start_thread (arg=0x7f9120a2b700) at pthread_create.c:308
#4  0x00007f91473afcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f91092c0700 (LWP 2258)):
#0  0x00007f91473a4303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f913b043d84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f913b043ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9144052c16 in QEventDispatcherGlib::processEvents (this=0x7f91040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f91440232bf in QEventLoop::processEvents (this=this@entry=0x7f91092bfdd0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f9144023548 in QEventLoop::exec (this=0x7f91092bfdd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f9143f24b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f91440039af in QInotifyFileSystemWatcherEngine::run (this=0x210c170) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f9143f27aec in QThreadPrivate::start (arg=0x210c170) at thread/qthread_unix.cpp:338
#9  0x00007f913b742e9a in start_thread (arg=0x7f91092c0700) at pthread_create.c:308
#10 0x00007f91473afcbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f9134019780 (LWP 2250)):
[KCrash Handler]
#6  QDeclarativeAnchorsPrivate::clearItem (this=0x91, item=0x7910c80) at graphicsitems/qdeclarativeanchors.cpp:235
#7  0x00007f9145c17de7 in QDeclarativeItem::~QDeclarativeItem (this=0x7910c80, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1670
#8  0x00007f910b9d4311 in ~QDeclarativeElement (this=0x7910c80, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#9  QDeclarativePrivate::QDeclarativeElement<Plasma::FrameSvgItem>::~QDeclarativeElement (this=0x7910c80, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#10 0x00007f9144039468 in QObject::event (this=0x7910c80, e=<optimized out>) at kernel/qobject.cpp:1176
#11 0x00007f91433cbe9c in QApplicationPrivate::notify_helper (this=this@entry=0x10ee290, receiver=receiver@entry=0x7910c80, e=e@entry=0x8d2b510) at kernel/qapplication.cpp:4562
#12 0x00007f91433d030a in QApplication::notify (this=0x10dce70, receiver=0x7910c80, e=0x8d2b510) at kernel/qapplication.cpp:4423
#13 0x00007f9144cdd1d6 in KApplication::notify (this=0x10dce70, receiver=0x7910c80, event=0x8d2b510) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007f914402456e in QCoreApplication::notifyInternal (this=0x10dce70, receiver=receiver@entry=0x7910c80, event=event@entry=0x8d2b510) at kernel/qcoreapplication.cpp:915
#15 0x00007f91440283f1 in sendEvent (event=0x8d2b510, receiver=0x7910c80) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x10651f0) at kernel/qcoreapplication.cpp:1539
#17 0x00007f9144052a63 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 postEventSourceDispatch (s=0x10edd90) at kernel/qeventdispatcher_glib.cpp:279
#19 0x00007f913b043ab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f913b043de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f913b043ea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f9144052bf6 in QEventDispatcherGlib::processEvents (this=0x1066ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007f9143470c1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007f91440232bf in QEventLoop::processEvents (this=this@entry=0x7fff75cbd0e0, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007f9144023548 in QEventLoop::exec (this=0x7fff75cbd0e0, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007f9144028708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#27 0x00007f91476b6035 in kdemain (argc=1, argv=0x7fff75cbd3d8) at ../../../../plasma/desktop/shell/main.cpp:120
#28 0x00007f91472dd76d in __libc_start_main (main=0x4006a0 <main(int, char**)>, argc=1, ubp_av=0x7fff75cbd3d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff75cbd3c8) at libc-start.c:226
#29 0x00000000004006d1 in _start ()

Reported using DrKonqi