Version:            (using Devel)
OS:                Linux
Installed from:    Compiled sources

KDE 4.2.95/Qt 4.5.2 as shipped by Mandriva.

I created new empty panel and added several widgets all from within the same dialogue. When I closed "Add widget" dialogue plasma crashed. It restarted keeping all just added widgets though.

Application: Рабочее пространство Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f4da3aa4710 (LWP 8794))]

Thread 2 (Thread 0x7f4d84606910 (LWP 8797)):
#0  0x00007f4da327cf29 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f4da34e7f8b in QWaitCondition::wait (this=<value optimized out>, mutex=0x1fc7de8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f4d9f97051c in QHostInfoAgent::run (this=0x1fc7dd0) at kernel/qhostinfo.cpp:260
#3  0x00007f4da34e6ed5 in QThreadPrivate::start (arg=0x1fc7dd0) at thread/qthread_unix.cpp:188
#4  0x00007f4da32787dd in start_thread () from /lib64/libpthread.so.0
#5  0x00007f4da0c6825d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f4da3aa4710 (LWP 8794)):
[KCrash Handler]
#5  0x00007f4da19158c4 in QGraphicsItem::isWidget (this=0x1d93f10) at graphicsview/qgraphicsitem.cpp:1143
#6  0x00007f4da1918069 in QGraphicsItem::isWindow (this=0x1d93f10) at graphicsview/qgraphicsitem.cpp:1156
#7  0x00007f4da194bef9 in QGraphicsScene::event (this=0x162f3b0, event=<value optimized out>) at graphicsview/qgraphicsscene.cpp:3850
#8  0x00007f4da1388c9c in QApplicationPrivate::notify_helper (this=0x15f59f0, receiver=0x162f3b0, e=0x7fff5c22f4f0) at kernel/qapplication.cpp:4056
#9  0x00007f4da138ff5e in QApplication::notify (this=0x15ebf70, receiver=0x162f3b0, e=0x7fff5c22f4f0) at kernel/qapplication.cpp:4021
#10 0x00007f4da1f9eade in KApplication::notify (this=0x15ebf70, receiver=0x162f3b0, event=0x7fff5c22f4f0) at /usr/src/debug/kdelibs-4.2.95/kdeui/kernel/kapplication.cpp:302
#11 0x00007f4da35d027c in QCoreApplication::notifyInternal (this=0x15ebf70, receiver=0x162f3b0, event=0x7fff5c22f4f0) at kernel/qcoreapplication.cpp:610
#12 0x00007f4da195d906 in QGraphicsView::viewportEvent (this=0x1db1180, event=0x7fff5c22f4f0) at ../../src/corelib/kernel/qcoreapplication.h:213
#13 0x00007f4da35cf577 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x1efd7a0, event=0x7fff5c22f4f0) at kernel/qcoreapplication.cpp:726
#14 0x00007f4da1388c6c in QApplicationPrivate::notify_helper (this=0x15f59f0, receiver=0x1efd7a0, e=0x7fff5c22f4f0) at kernel/qapplication.cpp:4052
#15 0x00007f4da138ff5e in QApplication::notify (this=0x15ebf70, receiver=0x1efd7a0, e=0x7fff5c22f4f0) at kernel/qapplication.cpp:4021
#16 0x00007f4da1f9eade in KApplication::notify (this=0x15ebf70, receiver=0x1efd7a0, event=0x7fff5c22f4f0) at /usr/src/debug/kdelibs-4.2.95/kdeui/kernel/kapplication.cpp:302
#17 0x00007f4da35d027c in QCoreApplication::notifyInternal (this=0x15ebf70, receiver=0x1efd7a0, event=0x7fff5c22f4f0) at kernel/qcoreapplication.cpp:610
#18 0x00007f4da13d86eb in QWidget::event (this=<value optimized out>, event=0x7fff5c22f4f0) at ../../src/corelib/kernel/qcoreapplication.h:213
#19 0x00007f4da173bff6 in QFrame::event (this=0x1db1180, e=0x7fff5c22f4f0) at widgets/qframe.cpp:559
#20 0x00007f4da17cd459 in QAbstractScrollArea::event (this=0x1db1180, e=0x7fff5c22f4f0) at widgets/qabstractscrollarea.cpp:918
#21 0x00007f4da1388c9c in QApplicationPrivate::notify_helper (this=0x15f59f0, receiver=0x1db1180, e=0x7fff5c22f4f0) at kernel/qapplication.cpp:4056
#22 0x00007f4da138ff5e in QApplication::notify (this=0x15ebf70, receiver=0x1db1180, e=0x7fff5c22f4f0) at kernel/qapplication.cpp:4021
#23 0x00007f4da1f9eade in KApplication::notify (this=0x15ebf70, receiver=0x1db1180, event=0x7fff5c22f4f0) at /usr/src/debug/kdelibs-4.2.95/kdeui/kernel/kapplication.cpp:302
#24 0x00007f4da35d027c in QCoreApplication::notifyInternal (this=0x15ebf70, receiver=0x1db1180, event=0x7fff5c22f4f0) at kernel/qcoreapplication.cpp:610
#25 0x00007f4da139365b in QApplication::setActiveWindow (act=<value optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:216
#26 0x00007f4da13f5d35 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff5c230dd0) at kernel/qapplication_x11.cpp:3469
#27 0x00007f4da141e294 in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#28 0x00007f4da02e0a8e in IA__g_main_context_dispatch (context=0x15f80c0) at gmain.c:1814
#29 0x00007f4da02e41f8 in g_main_context_iterate (context=0x15f80c0, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2445
#30 0x00007f4da02e4340 in IA__g_main_context_iteration (context=0x15f80c0, may_block=1) at gmain.c:2508
#31 0x00007f4da35f9366 in QEventDispatcherGlib::processEvents (this=0x155e070, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#32 0x00007f4da141da3e in QGuiEventDispatcherGlib::processEvents (this=0x1d93f10, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#33 0x00007f4da35ceb42 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#34 0x00007f4da35cef1c in QEventLoop::exec (this=0x7fff5c231100, flags=) at kernel/qeventloop.cpp:201
#35 0x00007f4da35d1129 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#36 0x00007f4d97ec7460 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdebase-workspace-4.2.95/plasma/shells/desktop/main.cpp:50
#37 0x00000000004067f2 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=<value optimized out>, envs=<value optimized out>, reset_env=false, 
    tty=0x0, avoid_loops=false, startup_id_str=0x40a734 "0") at /usr/src/debug/kdelibs-4.2.95/kinit/kinit.cpp:672
#38 0x0000000000406f88 in handle_launcher_request (sock=7, who=<value optimized out>) at /usr/src/debug/kdelibs-4.2.95/kinit/kinit.cpp:1164
#39 0x0000000000407c31 in handle_requests (waitForPid=0) at /usr/src/debug/kdelibs-4.2.95/kinit/kinit.cpp:1357
#40 0x0000000000408430 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/kdelibs-4.2.95/kinit/kinit.cpp:1784