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 2.6.31-15-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Opening the system monitor applet and clicking the next to last icon (I am not sure what it is supposed to be, would be nice with some tooltip) in the top row causes this crash for me.

 -- Backtrace:
Application: Plasma arbetsyta (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb772c700 (LWP 1525))]

Thread 2 (Thread 0xaacffb70 (LWP 1528)):
#0  0x0052a422 in __kernel_vsyscall ()
#1  0x00489e15 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x051df78d in __pthread_cond_wait (cond=0x8a0ab58, mutex=0x8a0ab40) at forward.c:139
#3  0x00bafe67 in QWaitConditionPrivate::wait (this=0x8a04510, mutex=0x8a0450c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x8a04510, mutex=0x8a0450c, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x05a0f922 in QHostInfoAgent::run (this=0x8a04500) at kernel/qhostinfo.cpp:260
#6  0x00baee32 in QThreadPrivate::start (arg=0x8a04500) at thread/qthread_unix.cpp:188
#7  0x0048580e in start_thread (arg=0xaacffb70) at pthread_create.c:300
#8  0x051d27ee in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb772c700 (LWP 1525)):
[KCrash Handler]
#6  Plasma::Containment::containmentType (this=0x8daf690) at ../../plasma/containment.cpp:418
#7  0x072973c3 in SystemMonitor::removeApplet (this=0x8a1c1a0, name=...) at ../../../../plasma/applets/system-monitor/system-monitor.cpp:156
#8  0x07297d6d in SystemMonitor::toggled (this=0x8a1c1a0, toggled=false) at ../../../../plasma/applets/system-monitor/system-monitor.cpp:108
#9  0x07297ea8 in SystemMonitor::qt_metacall (this=0x8a1c1a0, _c=QMetaObject::InvokeMetaMethod, _id=47, _a=0xbfc00a28) at ./system-monitor.moc:72
#10 0x00cb5263 in QMetaObject::activate (sender=0x8c014b0, from_signal_index=8, to_signal_index=8, argv=0xbfc00a28) at kernel/qobject.cpp:3113
#11 0x00cb5ec2 in QMetaObject::activate (sender=0x8c014b0, m=0x679863c, local_signal_index=1, argv=0xbfc00a28) at kernel/qobject.cpp:3187
#12 0x066dd6a9 in Plasma::PushButton::toggled (this=0x8c014b0, _t1=false) at ./pushbutton.moc:140
#13 0x066def20 in Plasma::PushButton::qt_metacall (this=0x8c014b0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0xbfc00bb8) at ./pushbutton.moc:85
#14 0x07299d4a in MonitorButton::qt_metacall (this=0x8c014b0, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbfc00bb8) at ./monitorbutton.moc:67
#15 0x00cb5263 in QMetaObject::activate (sender=0x8bff3e8, from_signal_index=31, to_signal_index=31, argv=0xbfc00bb8) at kernel/qobject.cpp:3113
#16 0x00cb5ec2 in QMetaObject::activate (sender=0x8bff3e8, m=0x3b930a4, local_signal_index=4, argv=0xbfc00bb8) at kernel/qobject.cpp:3187
#17 0x039acbe9 in QAbstractButton::toggled (this=0x8bff3e8, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:207
#18 0x036d74f4 in QAbstractButton::setChecked (this=0x8bff3e8, checked=false) at widgets/qabstractbutton.cpp:763
#19 0x036d7680 in QAbstractButton::nextCheckState (this=0x8bff3e8) at widgets/qabstractbutton.cpp:1017
#20 0x036d7163 in QAbstractButtonPrivate::click (this=0x8c13c18) at widgets/qabstractbutton.cpp:525
#21 0x036d7431 in QAbstractButton::mouseReleaseEvent (this=0x8bff3e8, e=0x9040d08) at widgets/qabstractbutton.cpp:1115
#22 0x03375012 in QWidget::event (this=0x8bff3e8, event=0x9040d08) at kernel/qwidget.cpp:7549
#23 0x036d53ee in QAbstractButton::event (this=0x8bff3e8, e=0x0) at widgets/qabstractbutton.cpp:1077
#24 0x0377f66d in QPushButton::event (this=0x8bff3e8, e=0x9040d08) at widgets/qpushbutton.cpp:662
#25 0x0331ff54 in QApplicationPrivate::notify_helper (this=0x866b7c0, receiver=0x8bff3e8, e=0x9040d08) at kernel/qapplication.cpp:4056
#26 0x03328033 in QApplication::notify (this=0x86659b0, receiver=0x8bff3e8, e=0x9040d08) at kernel/qapplication.cpp:3758
#27 0x00f65bfa in KApplication::notify (this=0x86659b0, receiver=0x8bff3e8, event=0x9040d08) at ../../kdeui/kernel/kapplication.cpp:302
#28 0x00c9f6cb in QCoreApplication::notifyInternal (this=0x86659b0, receiver=0x8bff3e8, event=0x9040d08) at kernel/qcoreapplication.cpp:610
#29 0x03326f6e in QCoreApplication::sendSpontaneousEvent (receiver=0x8bff3e8, event=0x9040d08, alienWidget=0x0, nativeWidget=0x8bff3e8, buttonDown=0xbfc0123c, lastMouseReceiver=...)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#30 QApplicationPrivate::sendMouseEvent (receiver=0x8bff3e8, event=0x9040d08, alienWidget=0x0, nativeWidget=0x8bff3e8, buttonDown=0xbfc0123c, lastMouseReceiver=...) at kernel/qapplication.cpp:2924
#31 0x0398d1b5 in QGraphicsProxyWidgetPrivate::sendWidgetMouseEvent (this=0x8c725b8, event=0xbfc018bc) at graphicsview/qgraphicsproxywidget.cpp:278
#32 0x0392b8bc in QGraphicsItem::sceneEvent (this=0x8c014b8, event=0xbfc018bc) at graphicsview/qgraphicsitem.cpp:5030
#33 0x039789ef in QGraphicsWidget::sceneEvent (this=0x8c014b0, event=0xbfc018bc) at graphicsview/qgraphicswidget.cpp:1110
#34 0x0394de14 in QGraphicsScenePrivate::sendEvent (this=0x86c6cc8, item=0x8c014b8, event=0xbfc018bc) at graphicsview/qgraphicsscene.cpp:1159
#35 0x0394f443 in QGraphicsScenePrivate::sendMouseEvent (this=0x86c6cc8, mouseEvent=0xbfc018bc) at graphicsview/qgraphicsscene.cpp:1230
#36 0x0395a344 in QGraphicsScene::mouseReleaseEvent (this=0x876c140, mouseEvent=0xbfc018bc) at graphicsview/qgraphicsscene.cpp:4445
#37 0x0395bf87 in QGraphicsScene::event (this=0x876c140, event=0xbfc018bc) at graphicsview/qgraphicsscene.cpp:3808
#38 0x0331ff54 in QApplicationPrivate::notify_helper (this=0x866b7c0, receiver=0x876c140, e=0xbfc018bc) at kernel/qapplication.cpp:4056
#39 0x0332767c in QApplication::notify (this=0x86659b0, receiver=0x876c140, e=0xbfc018bc) at kernel/qapplication.cpp:3603
#40 0x00f65bfa in KApplication::notify (this=0x86659b0, receiver=0x876c140, event=0xbfc018bc) at ../../kdeui/kernel/kapplication.cpp:302
#41 0x00c9f6cb in QCoreApplication::notifyInternal (this=0x86659b0, receiver=0x876c140, event=0xbfc018bc) at kernel/qcoreapplication.cpp:610
#42 0x0396db1e in QCoreApplication::sendEvent (this=0x8c7aa18, event=0xbfc01ee0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#43 QGraphicsView::mouseReleaseEvent (this=0x8c7aa18, event=0xbfc01ee0) at graphicsview/qgraphicsview.cpp:3382
#44 0x03375012 in QWidget::event (this=0x8c7aa18, event=0xbfc01ee0) at kernel/qwidget.cpp:7549
#45 0x03724633 in QFrame::event (this=0x8c7aa18, e=0xbfc01ee0) at widgets/qframe.cpp:559
#46 0x037c3494 in QAbstractScrollArea::viewportEvent (this=0x6, e=0x0) at widgets/qabstractscrollarea.cpp:962
#47 0x0396d51f in QGraphicsView::viewportEvent (this=0x8c7aa18, event=0xbfc01ee0) at graphicsview/qgraphicsview.cpp:2919
#48 0x037c5a95 in QAbstractScrollAreaPrivate::viewportEvent (this=0x8db1d88, o=0x8daf0c0, e=0xbfc01ee0) at widgets/qabstractscrollarea_p.h:100
#49 QAbstractScrollAreaFilter::eventFilter (this=0x8db1d88, o=0x8daf0c0, e=0xbfc01ee0) at widgets/qabstractscrollarea_p.h:111
#50 0x00c9e83a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x866b7c0, receiver=0x8daf0c0, event=0xbfc01ee0) at kernel/qcoreapplication.cpp:726
#51 0x0331ff2c in QApplicationPrivate::notify_helper (this=0x866b7c0, receiver=0x8daf0c0, e=0xbfc01ee0) at kernel/qapplication.cpp:4052
#52 0x03328033 in QApplication::notify (this=0x86659b0, receiver=0x8daf0c0, e=0xbfc01ee0) at kernel/qapplication.cpp:3758
#53 0x00f65bfa in KApplication::notify (this=0x86659b0, receiver=0x8daf0c0, event=0xbfc01ee0) at ../../kdeui/kernel/kapplication.cpp:302
#54 0x00c9f6cb in QCoreApplication::notifyInternal (this=0x86659b0, receiver=0x8daf0c0, event=0xbfc01ee0) at kernel/qcoreapplication.cpp:610
#55 0x03326f6e in QCoreApplication::sendSpontaneousEvent (receiver=0x8daf0c0, event=0xbfc01ee0, alienWidget=0x8daf0c0, nativeWidget=0x8a218e8, buttonDown=0x3b9aaa0, lastMouseReceiver=...)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#56 QApplicationPrivate::sendMouseEvent (receiver=0x8daf0c0, event=0xbfc01ee0, alienWidget=0x8daf0c0, nativeWidget=0x8a218e8, buttonDown=0x3b9aaa0, lastMouseReceiver=...)
    at kernel/qapplication.cpp:2924
#57 0x033957c0 in QETWidget::translateMouseEvent (this=0x8a218e8, event=0xbfc0352c) at kernel/qapplication_x11.cpp:4409
#58 0x03394c4b in QApplication::x11ProcessEvent (this=0x86659b0, event=0xbfc0352c) at kernel/qapplication_x11.cpp:3428
#59 0x033c1502 in x11EventSourceDispatch (s=0x866e400, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#60 0x003afe78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#61 0x003b3720 in ?? () from /lib/libglib-2.0.so.0
#62 0x003b3853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#63 0x00cca02c in QEventDispatcherGlib::processEvents (this=0x866b5b0, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#64 0x033c0be5 in QGuiEventDispatcherGlib::processEvents (this=0x866b5b0, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#65 0x00c9dc79 in QEventLoop::processEvents (this=0xbfc03824, flags=) at kernel/qeventloop.cpp:149
#66 0x00c9e0ca in QEventLoop::exec (this=0xbfc03824, flags=...) at kernel/qeventloop.cpp:201
#67 0x00ca053f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#68 0x0331fdd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#69 0x02b6680d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#70 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x862ed48 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#71 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#72 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#73 0x0804fbaf in main (argc=2, argv=0xbfc04084, envp=0xbfc04090) at ../../kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 205660

Reported using DrKonqi