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-server i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
added the nagios plasmoid from kde-look GHNS, removed it. and plasma crash a little white after 

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 4115)]

Thread 3 (Thread 0xa56e8b90 (LWP 4136)):
#0  0xb8076424 in __kernel_vsyscall ()
#1  0xb65880e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb67682ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7e6f172 in QWaitCondition::wait (this=0xa5b2f70, mutex=0xa5b2f6c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb77abac2 in QHostInfoAgent::run (this=0xa5b2f60) at kernel/qhostinfo.cpp:260
#5  0xb7e6e132 in QThreadPrivate::start (arg=0xa5b2f60) at thread/qthread_unix.cpp:188
#6  0xb65844ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb675949e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa189fb90 (LWP 4139)):
#0  0xb65d471b in IA__g_main_context_check (context=0xa484990, max_priority=2147483647, fds=0xa6603720, n_fds=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2325
#1  0xb65d4fdd in g_main_context_iterate (context=0xa484990, block=1, dispatch=1, self=0xa66036f8) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2445
#2  0xb65d5268 in IA__g_main_context_iteration (context=0xa484990, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#3  0xb7f8e317 in QEventDispatcherGlib::processEvents (this=0xa714d68, flags={i = -1584795032}) at kernel/qeventdispatcher_glib.cpp:329
#4  0xb7f611fa in QEventLoop::processEvents (this=0xa189f2e0, flags={i = -1584794968}) at kernel/qeventloop.cpp:149
#5  0xb7f61642 in QEventLoop::exec (this=0xa189f2e0, flags={i = -1584794904}) at kernel/qeventloop.cpp:201
#6  0xb7e6ae19 in QThread::exec (this=0xa421f20) at thread/qthread.cpp:487
#7  0xb7f43fab in QInotifyFileSystemWatcherEngine::run (this=0xa421f20) at io/qfilesystemwatcher_inotify.cpp:214
#8  0xb7e6e132 in QThreadPrivate::start (arg=0xa421f20) at thread/qthread_unix.cpp:188
#9  0xb65844ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0xb675949e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb6091a10 (LWP 4115)):
[KCrash Handler]
#6  0xb7034f15 in QGraphicsItem::update (this=0xd4efae0, rect=@0xbf990838) at graphicsview/qgraphicsitem.cpp:3975
#7  0x9ef407d9 in ?? () from /var/lib/python-support/python2.6/PyQt4/QtGui.so
#8  0x9f405aed in PyCFunction_Call () from /usr/lib/libpython2.6.so.1.0
#9  0x9f467bf0 in PyEval_EvalFrameEx () from /usr/lib/libpython2.6.so.1.0
#10 0x9f469910 in PyEval_EvalCodeEx () from /usr/lib/libpython2.6.so.1.0
#11 0x9f3ef87a in ?? () from /usr/lib/libpython2.6.so.1.0
#12 0x9f3bf98c in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#13 0x9f3d07a8 in ?? () from /usr/lib/libpython2.6.so.1.0
#14 0x9f3bf98c in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#15 0x9f461a34 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.6.so.1.0
#16 0x9f5fe47f in sip_api_invoke_slot () from /var/lib/python-support/python2.6/sip.so
#17 0x9f3215bb in ?? () from /var/lib/python-support/python2.6/PyQt4/QtCore.so
#18 0x9f321e52 in ?? () from /var/lib/python-support/python2.6/PyQt4/QtCore.so
#19 0x9f321f33 in ?? () from /var/lib/python-support/python2.6/PyQt4/QtCore.so
#20 0xb7f781b8 in QMetaObject::activate (sender=0xd45c970, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#21 0xb7f78e42 in QMetaObject::activate (sender=0xd45c970, m=0xb8055904, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#22 0xb7fb4687 in QTimer::timeout (this=0xd45c970) at .moc/release-shared/moc_qtimer.cpp:128
#23 0xb7f7e5ce in QTimer::timerEvent (this=0xd45c970, e=0xbf9915bc) at kernel/qtimer.cpp:261
#24 0x9f281e4d in ?? () from /var/lib/python-support/python2.6/PyQt4/QtCore.so
#25 0xb7f7316f in QObject::event (this=0xd45c970, e=0xbf9915bc) at kernel/qobject.cpp:1075
#26 0x9f281de3 in ?? () from /var/lib/python-support/python2.6/PyQt4/QtCore.so
#27 0xb6a1ed3c in QApplicationPrivate::notify_helper (this=0x987e230, receiver=0xd45c970, e=0xbf9915bc) at kernel/qapplication.cpp:4056
#28 0xb6a2703e in QApplication::notify (this=0x985b028, receiver=0xd45c970, e=0xbf9915bc) at kernel/qapplication.cpp:3603
#29 0xb752f49d in KApplication::notify (this=0x985b028, receiver=0xd45c970, event=0xbf9915bc) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#30 0xb7f62bcb in QCoreApplication::notifyInternal (this=0x985b028, receiver=0xd45c970, event=0xbf9915bc) at kernel/qcoreapplication.cpp:610
#31 0xb7f91d51 in QTimerInfoList::activateTimers (this=0x9880334) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#32 0xb7f8e3a0 in timerSourceDispatch (source=0x9880300) at kernel/qeventdispatcher_glib.cpp:165
#33 0xb65d1b88 in IA__g_main_context_dispatch (context=0x9880240) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#34 0xb65d50eb in g_main_context_iterate (context=0x9880240, block=1, dispatch=1, self=0x987d7b8) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#35 0xb65d5268 in IA__g_main_context_iteration (context=0x9880240, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#36 0xb7f8e2f8 in QEventDispatcherGlib::processEvents (this=0x987dd00, flags={i = -1080486088}) at kernel/qeventdispatcher_glib.cpp:327
#37 0xb6ac0a75 in QGuiEventDispatcherGlib::processEvents (this=0x987dd00, flags={i = -1080486040}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb7f611fa in QEventLoop::processEvents (this=0xbf9917e0, flags={i = -1080485976}) at kernel/qeventloop.cpp:149
#39 0xb7f61642 in QEventLoop::exec (this=0xbf9917e0, flags={i = -1080485912}) at kernel/qeventloop.cpp:201
#40 0xb7f63ae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#41 0xb6a1ebb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#42 0xb3c802f0 in kdemain (argc=1, argv=0x9866680) at /build/buildd/kdebase-workspace-4.3.2/plasma/shells/desktop/main.cpp:50
#43 0x0804e27d in launch (argc=1, _name=0x97ff57c "/usr/bin/plasma-desktop", args=0x97ff594 "", cwd=0x0, envc=0, envs=0x97ff598 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805136d "0") at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:677
#44 0x0804ea5d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:1169
#45 0x0804efe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:1362
#46 0x0804fbca in main (argc=2, argv=0xbf991fd4, envp=0xbf991fe0) at /build/buildd/kde4libs-4.3.2/kinit/kinit.cpp:1793

Reported using DrKonqi