Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
problem when i tried to install some widgets... especialy i tried to install cpu, temperature, ram, and net widgets.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3507)]

Thread 2 (Thread 0xa89fcb90 (LWP 3510)):
#0  0xb7f66430 in __kernel_vsyscall ()
#1  0xb64810e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb66612ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7d67172 in QWaitCondition::wait (this=0x940c118, mutex=0x940c114, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb76a4ac2 in QHostInfoAgent::run (this=0x940c108) at kernel/qhostinfo.cpp:260
#5  0xb7d66132 in QThreadPrivate::start (arg=0x940c108) at thread/qthread_unix.cpp:188
#6  0xb647d4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb665249e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5f8aa10 (LWP 3507)):
[KCrash Handler]
#6  0xb6f1e8fa in QGraphicsItem::isWidget (this=0x93435c8) at graphicsview/qgraphicsitem.cpp:1142
#7  0xb6f58667 in QGraphicsScene::event (this=0x9116650, event=0xbfa7fe20) at graphicsview/qgraphicsscene.cpp:3850
#8  0xb6917d3c in QApplicationPrivate::notify_helper (this=0x9078280, receiver=0x9116650, e=0xbfa7fe20) at kernel/qapplication.cpp:4056
#9  0xb692003e in QApplication::notify (this=0x9072458, receiver=0x9116650, e=0xbfa7fe20) at kernel/qapplication.cpp:3603
#10 0xb742885d in KApplication::notify (this=0x9072458, receiver=0x9116650, event=0xbfa7fe20) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#11 0xb7e5abcb in QCoreApplication::notifyInternal (this=0x9072458, receiver=0x9116650, event=0xbfa7fe20) at kernel/qcoreapplication.cpp:610
#12 0xb6f6aa75 in QGraphicsView::viewportEvent (this=0x96606e0, event=0xbfa7fe20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#13 0xb6dc2235 in QAbstractScrollAreaFilter::eventFilter (this=0x9662890, o=0x9662968, e=0xbfa7fe20) at widgets/qabstractscrollarea_p.h:100
#14 0xb7e59dea in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x9078280, receiver=0x9662968, event=0xbfa7fe20) at kernel/qcoreapplication.cpp:726
#15 0xb6917d1a in QApplicationPrivate::notify_helper (this=0x9078280, receiver=0x9662968, e=0xbfa7fe20) at kernel/qapplication.cpp:4052
#16 0xb6920122 in QApplication::notify (this=0x9072458, receiver=0x9662968, e=0xbfa7fe20) at kernel/qapplication.cpp:4021
#17 0xb742885d in KApplication::notify (this=0x9072458, receiver=0x9662968, event=0xbfa7fe20) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#18 0xb7e5abcb in QCoreApplication::notifyInternal (this=0x9072458, receiver=0x9662968, event=0xbfa7fe20) at kernel/qcoreapplication.cpp:610
#19 0xb696e44d in QWidget::event (this=0x96606e0, event=0xbfa7fe20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 0xb6d1fa53 in QFrame::event (this=0x96606e0, e=0xbfa7fe20) at widgets/qframe.cpp:559
#21 0xb6dc072d in QAbstractScrollArea::event (this=0x96606e0, e=0xbfa7fe20) at widgets/qabstractscrollarea.cpp:918
#22 0xb6f676a6 in QGraphicsView::event (this=0x96606e0, event=0xbfa7fe20) at graphicsview/qgraphicsview.cpp:2840
#23 0xb6917d3c in QApplicationPrivate::notify_helper (this=0x9078280, receiver=0x96606e0, e=0xbfa7fe20) at kernel/qapplication.cpp:4056
#24 0xb6920122 in QApplication::notify (this=0x9072458, receiver=0x96606e0, e=0xbfa7fe20) at kernel/qapplication.cpp:4021
#25 0xb742885d in KApplication::notify (this=0x9072458, receiver=0x96606e0, event=0xbfa7fe20) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#26 0xb7e5abcb in QCoreApplication::notifyInternal (this=0x9072458, receiver=0x96606e0, event=0xbfa7fe20) at kernel/qcoreapplication.cpp:610
#27 0xb691ec6b in QApplication::setActiveWindow (act=0x96606e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#28 0xb698e7b5 in QApplication::x11ProcessEvent (this=0x9072458, event=0xbfa8136c) at kernel/qapplication_x11.cpp:3469
#29 0xb69ba37a in x11EventSourceDispatch (s=0x907ae68, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#30 0xb64cab88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#31 0xb64ce0eb in ?? () from /usr/lib/libglib-2.0.so.0
#32 0xb64ce268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#33 0xb7e862f8 in QEventDispatcherGlib::processEvents (this=0x9078070, flags={i = -1079503576}) at kernel/qeventdispatcher_glib.cpp:327
#34 0xb69b9a75 in QGuiEventDispatcherGlib::processEvents (this=0x9078070, flags={i = -1079503528}) at kernel/qguieventdispatcher_glib.cpp:202
#35 0xb7e591fa in QEventLoop::processEvents (this=0xbfa815d0, flags={i = -1079503464}) at kernel/qeventloop.cpp:149
#36 0xb7e59642 in QEventLoop::exec (this=0xbfa815d0, flags={i = -1079503400}) at kernel/qeventloop.cpp:201
#37 0xb7e5bae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#38 0xb6917bb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#39 0xb4adc310 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#40 0x0804e27d in launch (argc=1, _name=0x900157c "/usr/bin/plasma-desktop", args=0x9001594 "", cwd=0x0, envc=0, envs=0x9001598 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805136d "0") at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:677
#41 0x0804ea5d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1169
#42 0x0804efe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1362
#43 0x0804fbca in main (argc=2, argv=0xbfa81dc4, envp=0xbfa81dd0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1793

Reported using DrKonqi