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 2.6.31-14-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Removed "System Load Viewer"
Added "System Monitor - Network"
Added "System Monitor - RAM"
Clicked on the cachew to move them into place.
I noticed that as I moved the "System Monitor - RAM" widget a black band was left in it's trail on the panel.
This black band corresponds to the black bands at the top of the widget.
<crash>

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[Current thread is 1 (Thread 0x7f73a42ec750 (LWP 1754))]

Thread 2 (Thread 0x7f7382cca910 (LWP 1758)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f73a3d2b4fb in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x20edf48, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x20edf48, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f73a016278c in QHostInfoAgent::run (this=0x20edf30) at kernel/qhostinfo.cpp:260
#4  0x00007f73a3d2a445 in QThreadPrivate::start (arg=0x20edf30) at thread/qthread_unix.cpp:188
#5  0x00007f73a0aa0a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007f73a16807bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f73a42ec750 (LWP 1754)):
[KCrash Handler]
#5  0x00007f73a2341484 in QGraphicsItem::isWidget (this=0x28e85a0) at graphicsview/qgraphicsitem.cpp:1143
#6  0x00007f73a2343b89 in QGraphicsItem::isWindow (this=0x28e85a0) at graphicsview/qgraphicsitem.cpp:1156
#7  0x00007f73a2377269 in QGraphicsScene::event (this=0x1a212a0, event=<value optimized out>) at graphicsview/qgraphicsscene.cpp:3850
#8  0x00007f73a1dc0efc in QApplicationPrivate::notify_helper (this=0x193d620, receiver=0x1a212a0, e=0x7fffadc1b6a0) at kernel/qapplication.cpp:4056
#9  0x00007f73a1dc81ce in QApplication::notify (this=0x1934440, receiver=0x1a212a0, e=0x7fffadc1b6a0) at kernel/qapplication.cpp:4021
#10 0x00007f73a29f7ab6 in KApplication::notify (this=0x1934440, receiver=0x1a212a0, event=0x7fffadc1b6a0) at ../../kdeui/kernel/kapplication.cpp:302
#11 0x00007f73a3e10c2c in QCoreApplication::notifyInternal (this=0x1934440, receiver=0x1a212a0, event=0x7fffadc1b6a0) at kernel/qcoreapplication.cpp:610
#12 0x00007f73a23889f6 in QCoreApplication::sendEvent (this=0x242d470, event=0x7fffadc1b6a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#13 QGraphicsView::viewportEvent (this=0x242d470, event=0x7fffadc1b6a0) at graphicsview/qgraphicsview.cpp:2880
#14 0x00007f73a3e0ff47 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x23ed440, event=0x7fffadc1b6a0) at kernel/qcoreapplication.cpp:726
#15 0x00007f73a1dc0ecc in QApplicationPrivate::notify_helper (this=0x193d620, receiver=0x23ed440, e=0x7fffadc1b6a0) at kernel/qapplication.cpp:4052
#16 0x00007f73a1dc81ce in QApplication::notify (this=0x1934440, receiver=0x23ed440, e=0x7fffadc1b6a0) at kernel/qapplication.cpp:4021
#17 0x00007f73a29f7ab6 in KApplication::notify (this=0x1934440, receiver=0x23ed440, event=0x7fffadc1b6a0) at ../../kdeui/kernel/kapplication.cpp:302
#18 0x00007f73a3e10c2c in QCoreApplication::notifyInternal (this=0x1934440, receiver=0x23ed440, event=0x7fffadc1b6a0) at kernel/qcoreapplication.cpp:610
#19 0x00007f73a1e0fb6b in QCoreApplication::sendEvent (this=<value optimized out>, event=0x7fffadc1b6a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 QWidget::event (this=<value optimized out>, event=0x7fffadc1b6a0) at kernel/qwidget.cpp:7797
#21 0x00007f73a216b2a6 in QFrame::event (this=0x242d470, e=0x7fffadc1b6a0) at widgets/qframe.cpp:559
#22 0x00007f73a21fabc9 in QAbstractScrollArea::event (this=0x242d470, e=0x7fffadc1b6a0) at widgets/qabstractscrollarea.cpp:918
#23 0x00007f73a1dc0efc in QApplicationPrivate::notify_helper (this=0x193d620, receiver=0x242d470, e=0x7fffadc1b6a0) at kernel/qapplication.cpp:4056
#24 0x00007f73a1dc81ce in QApplication::notify (this=0x1934440, receiver=0x242d470, e=0x7fffadc1b6a0) at kernel/qapplication.cpp:4021
#25 0x00007f73a29f7ab6 in KApplication::notify (this=0x1934440, receiver=0x242d470, event=0x7fffadc1b6a0) at ../../kdeui/kernel/kapplication.cpp:302
#26 0x00007f73a3e10c2c in QCoreApplication::notifyInternal (this=0x1934440, receiver=0x242d470, event=0x7fffadc1b6a0) at kernel/qcoreapplication.cpp:610
#27 0x00007f73a1dcb55b in QCoreApplication::sendSpontaneousEvent (act=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#28 QApplication::setActiveWindow (act=<value optimized out>) at kernel/qapplication.cpp:2414
#29 0x00007f73a1e2cb9e in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffadc1cf80) at kernel/qapplication_x11.cpp:3469
#30 0x00007f73a1e55d0c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#31 0x00007f73a0cf1bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#32 0x00007f73a0cf5588 in ?? () from /lib/libglib-2.0.so.0
#33 0x00007f73a0cf56b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#34 0x00007f73a3e391a6 in QEventDispatcherGlib::processEvents (this=0x18b1040, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#35 0x00007f73a1e554be in QGuiEventDispatcherGlib::processEvents (this=0x28e85a0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#36 0x00007f73a3e0f532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#37 0x00007f73a3e0f904 in QEventLoop::exec (this=0x7fffadc1d2b0, flags=) at kernel/qeventloop.cpp:201
#38 0x00007f73a3e11ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#39 0x00007f7398e7d4cf in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#40 0x0000000000406da8 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a299 "0") at ../../kinit/kinit.cpp:677
#41 0x0000000000407aa0 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#42 0x0000000000407f51 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#43 0x0000000000408bb2 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1793
The current source language is "auto; currently asm".
The current source language is "auto; currently c".

This bug may be a duplicate of or related to bug 211276

Reported using DrKonqi