Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
add Adjustable clock widget, move over the widget, click on the wrench to adjust settings and crash happens

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 4094)]

Thread 3 (Thread 0x7fc904ff4950 (LWP 4095)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:217
#1  0x00007fc92aa4d785 in thread_sleep (ti=0x7fc904ff3fb0) at thread/qthread_unix.cpp:297
#2  0x00007fc92aa4d8ee in QThread::msleep (msecs=50) at thread/qthread_unix.cpp:323
#3  0x00007fc91075410e in ?? () from /usr/lib/kde4/plasma_applet_cwp.so
#4  0x00007fc92aa4dd35 in QThreadPrivate::start (arg=0x24a9d10) at thread/qthread_unix.cpp:188
#5  0x00007fc9269413ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#6  0x00007fc927525fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fc8ff3df950 (LWP 4098)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fc92aa4ed19 in QWaitCondition::wait (this=0x333d640, mutex=0x333d638, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007fc9298d381c in QHostInfoAgent::run (this=0x333d620) at kernel/qhostinfo.cpp:260
#3  0x00007fc92aa4dd35 in QThreadPrivate::start (arg=0x333d620) at thread/qthread_unix.cpp:188
#4  0x00007fc9269413ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007fc927525fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fc92b00e750 (LWP 4094)):
[KCrash Handler]
#5  0x000000000060b580 in QString::shared_null ()
#6  0x00007fc92ab490c5 in QObject::connect (sender=0x58b9530, signal=0x7fc90f87c938 "applyClicked()", receiver=0x5c8df80, method=0x7fc90f87c926 "configAccepted()", type=Qt::AutoConnection)
    at kernel/qobject.cpp:2490
#7  0x00007fc90f871965 in ClockApplet::createConfigurationInterface () from /usr/lib/libplasmaclock.so.4
#8  0x00007fc8eac5c33d in ?? () from /usr/lib/kde4/plasma_applet_adjustableclock.so
#9  0x00007fc922457ff5 in Plasma::Applet::showConfigurationInterface (this=0x5c8df80) at /build/buildd/kde4libs-4.3.2/plasma/applet.cpp:1602
#10 0x00007fc9224a5b51 in Plasma::AppletHandle::mouseReleaseEvent (this=0x5014d90, event=0x7fff330483f0) at /build/buildd/kde4libs-4.3.2/plasma/private/applethandle.cpp:532
#11 0x00007fc9286a1b6f in QGraphicsItem::sceneEvent (this=0x5014da0, event=0x7fc929367867) at graphicsview/qgraphicsitem.cpp:5030
#12 0x00007fc9286c8526 in QGraphicsScenePrivate::sendMouseEvent (this=0x1daebd0, mouseEvent=0x7fff330483f0) at graphicsview/qgraphicsscene.cpp:1230
#13 0x00007fc9286d2c31 in QGraphicsScene::mouseReleaseEvent (this=<value optimized out>, mouseEvent=0x7fff330483f0) at graphicsview/qgraphicsscene.cpp:4445
#14 0x00007fc9286d4830 in QGraphicsScene::event (this=0x1dbc410, event=0x7fff330483f0) at graphicsview/qgraphicsscene.cpp:3808
#15 0x00007fc9280fcf4d in QApplicationPrivate::notify_helper (this=0x1d778c0, receiver=0x1dbc410, e=0x7fff330483f0) at kernel/qapplication.cpp:4056
#16 0x00007fc92810518a in QApplication::notify (this=0x1d38a40, receiver=0x1dbc410, e=0x7fff330483f0) at kernel/qapplication.cpp:4021
#17 0x00007fc92920fabb in KApplication::notify (this=0x1d38a40, receiver=0x1dbc410, event=0x7fff330483f0) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#18 0x00007fc92ab376ac in QCoreApplication::notifyInternal (this=0x1d38a40, receiver=0x1dbc410, event=0x7fff330483f0) at kernel/qcoreapplication.cpp:610
#19 0x00007fc9286e507b in QGraphicsView::mouseReleaseEvent (this=0x33e9270, event=0x7fff33048c80) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 0x00007fc92814e0bf in QWidget::event (this=0x33e9270, event=0x7fff33048c80) at kernel/qwidget.cpp:7549
#21 0x00007fc9284c0f0b in QFrame::event (this=0x33e9270, e=0x7fff33048c80) at widgets/qframe.cpp:559
#22 0x00007fc9286e530b in QGraphicsView::viewportEvent (this=0x33e9270, event=0x7fff33048c80) at graphicsview/qgraphicsview.cpp:2919
#23 0x00007fc92ab369b8 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x33fc470, event=0x7fff33048c80) at kernel/qcoreapplication.cpp:726
#24 0x00007fc9280fcf1c in QApplicationPrivate::notify_helper (this=0x1d778c0, receiver=0x33fc470, e=0x7fff33048c80) at kernel/qapplication.cpp:4052
#25 0x00007fc9281058ea in QApplication::notify (this=<value optimized out>, receiver=0x33fc470, e=0x7fff33048c80) at kernel/qapplication.cpp:3758
#26 0x00007fc92920fabb in KApplication::notify (this=0x1d38a40, receiver=0x33fc470, event=0x7fff33048c80) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#27 0x00007fc92ab376ac in QCoreApplication::notifyInternal (this=0x1d38a40, receiver=0x33fc470, event=0x7fff33048c80) at kernel/qcoreapplication.cpp:610
#28 0x00007fc928104b38 in QApplicationPrivate::sendMouseEvent (receiver=0x33fc470, event=0x7fff33048c80, alienWidget=0x33fc470, nativeWidget=0x33e9270, buttonDown=<value optimized out>, 
    lastMouseReceiver=@0x7fc928b34010) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#29 0x00007fc92816eb19 in QETWidget::translateMouseEvent (this=0x33e9270, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#30 0x00007fc92816db53 in QApplication::x11ProcessEvent (this=0x1d38a40, event=0x7fff3304a800) at kernel/qapplication_x11.cpp:3550
#31 0x00007fc928196454 in x11EventSourceDispatch (s=0x1d7aec0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#32 0x00007fc926b9020a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#33 0x00007fc926b938e0 in ?? () from /usr/lib/libglib-2.0.so.0
#34 0x00007fc926b93a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#35 0x00007fc92ab60a8f in QEventDispatcherGlib::processEvents (this=0x1d773f0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#36 0x00007fc928195bdf in QGuiEventDispatcherGlib::processEvents (this=0x5c8df80, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#37 0x00007fc92ab35f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 855943920}) at kernel/qeventloop.cpp:149
#38 0x00007fc92ab36314 in QEventLoop::exec (this=0x7fff3304ab30, flags={i = 855944000}) at kernel/qeventloop.cpp:201
#39 0x00007fc92ab385e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#40 0x00007fc91ea753eb in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#41 0x0000000000407215 in launch (argc=1, _name=0x1d2b748 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x1d2b768 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3a1 "0") at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:677
#42 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:1169
#43 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:1362
#44 0x0000000000408b26 in main (argc=2, argv=0x7fff3304b9d8, envp=0x7fff3304b9f0) at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:1793

Reported using DrKonqi