Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.5 (KDE 4.3.5)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-16-generic i686
Distribution: Linux Mint 8 Helena - KDE Community Edition

What I was doing when the application crashed:
After adding the system monitor widget I am able to add items to monitor, however removing them always results in a crash

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7791700 (LWP 1810))]

Thread 2 (Thread 0xab112b70 (LWP 1811)):
#0  0x00113422 in __kernel_vsyscall ()
#1  0x00ca0e15 in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
#2  0x00b6b9ad in __pthread_cond_wait (cond=0xa50bc20, mutex=0xa50bc08) at forward.c:139
#3  0x00163e67 in QWaitConditionPrivate::wait (this=0xa437f30, mutex=0xa437f2c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0xa437f30, mutex=0xa437f2c, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x068a9922 in QHostInfoAgent::run (this=0xa437f20) at kernel/qhostinfo.cpp:260
#6  0x00162e32 in QThreadPrivate::start (arg=0xa437f20) at thread/qthread_unix.cpp:188
#7  0x00c9c80e in start_thread (arg=0xab112b70) at pthread_create.c:300
#8  0x00b5ea0e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb7791700 (LWP 1810)):
[KCrash Handler]
#6  Plasma::Containment::containmentType (this=0xbb2e658) at ../../plasma/containment.cpp:418
#7  0x015373c3 in ?? () from /usr/lib/kde4/plasma_applet_system-monitor.so
#8  0x01537d6d in ?? () from /usr/lib/kde4/plasma_applet_system-monitor.so
#9  0x01537ea8 in ?? () from /usr/lib/kde4/plasma_applet_system-monitor.so
#10 0x00269263 in QMetaObject::activate (sender=0xa5bac98, from_signal_index=8, to_signal_index=8, argv=0xbfdbd798) at kernel/qobject.cpp:3113
#11 0x00269ec2 in QMetaObject::activate (sender=0xa5bac98, m=0x99dc63c, local_signal_index=1, argv=0xbfdbd798) at kernel/qobject.cpp:3187
#12 0x09922149 in Plasma::PushButton::toggled (this=0xa5bac98, _t1=false) at ./pushbutton.moc:142
#13 0x099237a0 in Plasma::PushButton::qt_metacall (this=0xa5bac98, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0xbfdbd928) at ./pushbutton.moc:86
#14 0x01539d4a in MonitorButton::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/kde4/plasma_applet_system-monitor.so
#15 0x00269263 in QMetaObject::activate (sender=0xa5bd818, from_signal_index=31, to_signal_index=31, argv=0xbfdbd928) at kernel/qobject.cpp:3113
#16 0x00269ec2 in QMetaObject::activate (sender=0xa5bd818, m=0x27250a4, local_signal_index=4, argv=0xbfdbd928) at kernel/qobject.cpp:3187
#17 0x0253ebe9 in QAbstractButton::toggled (this=0xa5bd818, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:207
#18 0x022694f4 in QAbstractButton::setChecked (this=0xa5bd818, checked=false) at widgets/qabstractbutton.cpp:763
#19 0x02269680 in QAbstractButton::nextCheckState (this=0xa5bd818) at widgets/qabstractbutton.cpp:1017
#20 0x02269163 in QAbstractButtonPrivate::click (this=0xa600a60) at widgets/qabstractbutton.cpp:525
#21 0x02269431 in QAbstractButton::mouseReleaseEvent (this=0xa5bd818, e=0xa7c2430) at widgets/qabstractbutton.cpp:1115
#22 0x01f07012 in QWidget::event (this=0xa5bd818, event=0xa7c2430) at kernel/qwidget.cpp:7549
#23 0x022673ee in QAbstractButton::event (this=0xa5bd818, e=0x0) at widgets/qabstractbutton.cpp:1077
#24 0x0231166d in QPushButton::event (this=0xa5bd818, e=0xa7c2430) at widgets/qpushbutton.cpp:662
#25 0x01eb1f54 in QApplicationPrivate::notify_helper (this=0x9dbc800, receiver=0xa5bd818, e=0xa7c2430) at kernel/qapplication.cpp:4056
#26 0x01eba033 in QApplication::notify (this=0x9d959b8, receiver=0xa5bd818, e=0xa7c2430) at kernel/qapplication.cpp:3758
#27 0x00eb325a in KApplication::notify (this=0x9d959b8, receiver=0xa5bd818, event=0xa7c2430) at ../../kdeui/kernel/kapplication.cpp:302
#28 0x002536cb in QCoreApplication::notifyInternal (this=0x9d959b8, receiver=0xa5bd818, event=0xa7c2430) at kernel/qcoreapplication.cpp:610
#29 0x01eb8f6e in QCoreApplication::sendSpontaneousEvent (receiver=0xa5bd818, event=0xa7c2430, alienWidget=0x0, nativeWidget=0xa5bd818, buttonDown=0xbfdbdfac, lastMouseReceiver=...)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#30 QApplicationPrivate::sendMouseEvent (receiver=0xa5bd818, event=0xa7c2430, alienWidget=0x0, nativeWidget=0xa5bd818, buttonDown=0xbfdbdfac, lastMouseReceiver=...) at kernel/qapplication.cpp:2924
#31 0x0251f1b5 in QGraphicsProxyWidgetPrivate::sendWidgetMouseEvent (this=0xa600818, event=0xbfdbe62c) at graphicsview/qgraphicsproxywidget.cpp:278
#32 0x024bd8bc in QGraphicsItem::sceneEvent (this=0xa5baca0, event=0xbfdbe62c) at graphicsview/qgraphicsitem.cpp:5030
#33 0x0250a9ef in QGraphicsWidget::sceneEvent (this=0xa5bac98, event=0xbfdbe62c) at graphicsview/qgraphicswidget.cpp:1110
#34 0x024dfe14 in QGraphicsScenePrivate::sendEvent (this=0x9e660d8, item=0xa5baca0, event=0xbfdbe62c) at graphicsview/qgraphicsscene.cpp:1159
#35 0x024e1443 in QGraphicsScenePrivate::sendMouseEvent (this=0x9e660d8, mouseEvent=0xbfdbe62c) at graphicsview/qgraphicsscene.cpp:1230
#36 0x024ec344 in QGraphicsScene::mouseReleaseEvent (this=0x9e61670, mouseEvent=0xbfdbe62c) at graphicsview/qgraphicsscene.cpp:4445
#37 0x024edf87 in QGraphicsScene::event (this=0x9e61670, event=0xbfdbe62c) at graphicsview/qgraphicsscene.cpp:3808
#38 0x01eb1f54 in QApplicationPrivate::notify_helper (this=0x9dbc800, receiver=0x9e61670, e=0xbfdbe62c) at kernel/qapplication.cpp:4056
#39 0x01eb967c in QApplication::notify (this=0x9d959b8, receiver=0x9e61670, e=0xbfdbe62c) at kernel/qapplication.cpp:3603
#40 0x00eb325a in KApplication::notify (this=0x9d959b8, receiver=0x9e61670, event=0xbfdbe62c) at ../../kdeui/kernel/kapplication.cpp:302
#41 0x002536cb in QCoreApplication::notifyInternal (this=0x9d959b8, receiver=0x9e61670, event=0xbfdbe62c) at kernel/qcoreapplication.cpp:610
#42 0x024ffb1e in QCoreApplication::sendEvent (this=0xa5c7918, event=0xbfdbec50) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#43 QGraphicsView::mouseReleaseEvent (this=0xa5c7918, event=0xbfdbec50) at graphicsview/qgraphicsview.cpp:3382
#44 0x01f07012 in QWidget::event (this=0xa5c7918, event=0xbfdbec50) at kernel/qwidget.cpp:7549
#45 0x022b6633 in QFrame::event (this=0xa5c7918, e=0xbfdbec50) at widgets/qframe.cpp:559
#46 0x02355494 in QAbstractScrollArea::viewportEvent (this=0x6, e=0x0) at widgets/qabstractscrollarea.cpp:962
#47 0x024ff51f in QGraphicsView::viewportEvent (this=0xa5c7918, event=0xbfdbec50) at graphicsview/qgraphicsview.cpp:2919
#48 0x02357a95 in QAbstractScrollAreaPrivate::viewportEvent (this=0xa5cd670, o=0xa5e7cd0, e=0xbfdbec50) at widgets/qabstractscrollarea_p.h:100
#49 QAbstractScrollAreaFilter::eventFilter (this=0xa5cd670, o=0xa5e7cd0, e=0xbfdbec50) at widgets/qabstractscrollarea_p.h:111
#50 0x0025283a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x9dbc800, receiver=0xa5e7cd0, event=0xbfdbec50) at kernel/qcoreapplication.cpp:726
#51 0x01eb1f2c in QApplicationPrivate::notify_helper (this=0x9dbc800, receiver=0xa5e7cd0, e=0xbfdbec50) at kernel/qapplication.cpp:4052
#52 0x01eba033 in QApplication::notify (this=0x9d959b8, receiver=0xa5e7cd0, e=0xbfdbec50) at kernel/qapplication.cpp:3758
#53 0x00eb325a in KApplication::notify (this=0x9d959b8, receiver=0xa5e7cd0, event=0xbfdbec50) at ../../kdeui/kernel/kapplication.cpp:302
#54 0x002536cb in QCoreApplication::notifyInternal (this=0x9d959b8, receiver=0xa5e7cd0, event=0xbfdbec50) at kernel/qcoreapplication.cpp:610
#55 0x01eb8f6e in QCoreApplication::sendSpontaneousEvent (receiver=0xa5e7cd0, event=0xbfdbec50, alienWidget=0xa5e7cd0, nativeWidget=0xa2ce358, buttonDown=0x272caa0, lastMouseReceiver=...)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#56 QApplicationPrivate::sendMouseEvent (receiver=0xa5e7cd0, event=0xbfdbec50, alienWidget=0xa5e7cd0, nativeWidget=0xa2ce358, buttonDown=0x272caa0, lastMouseReceiver=...)
    at kernel/qapplication.cpp:2924
#57 0x01f277c0 in QETWidget::translateMouseEvent (this=0xa2ce358, event=0xbfdc029c) at kernel/qapplication_x11.cpp:4409
#58 0x01f26c4b in QApplication::x11ProcessEvent (this=0x9d959b8, event=0xbfdc029c) at kernel/qapplication_x11.cpp:3428
#59 0x01f53502 in x11EventSourceDispatch (s=0x9dbf400, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#60 0x00c18e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#61 0x00c1c730 in ?? () from /lib/libglib-2.0.so.0
#62 0x00c1c863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#63 0x0027e02c in QEventDispatcherGlib::processEvents (this=0x9dbc5f0, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#64 0x01f52be5 in QGuiEventDispatcherGlib::processEvents (this=0x9dbc5f0, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#65 0x00251c79 in QEventLoop::processEvents (this=0xbfdc0594, flags=) at kernel/qeventloop.cpp:149
#66 0x002520ca in QEventLoop::exec (this=0xbfdc0594, flags=...) at kernel/qeventloop.cpp:201
#67 0x0025453f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#68 0x01eb1dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#69 0x0935580d 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=0x9d81380 "", 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=0xbfdc0df4, envp=0xbfdc0e00) at ../../kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 210828

Reported using DrKonqi